Remove the flag `incompatible_no_transitive_loads`.

#5636

RELNOTES: None.
PiperOrigin-RevId: 279183449
diff --git a/src/main/java/com/google/devtools/build/lib/packages/StarlarkSemanticsOptions.java b/src/main/java/com/google/devtools/build/lib/packages/StarlarkSemanticsOptions.java
index 3d2ccb2..f3b2595 100644
--- a/src/main/java/com/google/devtools/build/lib/packages/StarlarkSemanticsOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/packages/StarlarkSemanticsOptions.java
@@ -521,20 +521,6 @@
   public boolean incompatibleNoTargetOutputGroup;
 
   @Option(
-      name = "incompatible_no_transitive_loads",
-      defaultValue = "true",
-      documentationCategory = OptionDocumentationCategory.STARLARK_SEMANTICS,
-      effectTags = {OptionEffectTag.BUILD_FILE_SEMANTICS},
-      metadataTags = {
-        OptionMetadataTag.INCOMPATIBLE_CHANGE,
-        OptionMetadataTag.TRIGGERED_BY_ALL_INCOMPATIBLE_CHANGES
-      },
-      help =
-          "If set to true, only symbols explicitly defined in the file can be loaded; "
-              + "symbols introduced by load are not implicitly re-exported.")
-  public boolean incompatibleNoTransitiveLoads;
-
-  @Option(
       name = "incompatible_remap_main_repo",
       defaultValue = "false",
       documentationCategory = OptionDocumentationCategory.STARLARK_SEMANTICS,
@@ -683,7 +669,6 @@
             .incompatibleNoRuleOutputsParam(incompatibleNoRuleOutputsParam)
             .incompatibleNoSupportToolsInActionInputs(incompatibleNoSupportToolsInActionInputs)
             .incompatibleNoTargetOutputGroup(incompatibleNoTargetOutputGroup)
-            .incompatibleNoTransitiveLoads(incompatibleNoTransitiveLoads)
             .incompatibleRemapMainRepo(incompatibleRemapMainRepo)
             .incompatibleRemoveNativeMavenJar(incompatibleRemoveNativeMavenJar)
             .incompatibleRestrictNamedParams(incompatibleRestrictNamedParams)
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java b/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java
index 40d4550..613d4b5 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/StarlarkSemantics.java
@@ -188,8 +188,6 @@
 
   public abstract boolean incompatibleNoTargetOutputGroup();
 
-  public abstract boolean incompatibleNoTransitiveLoads();
-
   public abstract boolean incompatibleRemapMainRepo();
 
   public abstract boolean incompatibleRemoveNativeMavenJar();
@@ -278,7 +276,6 @@
           .incompatibleNoRuleOutputsParam(false)
           .incompatibleNoSupportToolsInActionInputs(true)
           .incompatibleNoTargetOutputGroup(true)
-          .incompatibleNoTransitiveLoads(true)
           .incompatibleRemapMainRepo(false)
           .incompatibleRemoveNativeMavenJar(false)
           .incompatibleRunShellCommandString(false)
@@ -359,8 +356,6 @@
 
     public abstract Builder incompatibleNoTargetOutputGroup(boolean value);
 
-    public abstract Builder incompatibleNoTransitiveLoads(boolean value);
-
     public abstract Builder incompatibleRemapMainRepo(boolean value);
 
     public abstract Builder incompatibleRemoveNativeMavenJar(boolean value);
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/StarlarkThread.java b/src/main/java/com/google/devtools/build/lib/syntax/StarlarkThread.java
index a965a6c..816f84c 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/StarlarkThread.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/StarlarkThread.java
@@ -353,10 +353,7 @@
       // Legacy behavior: all symbols from the global Frame are exported (including symbols
       // introduced by load).
       this(
-          ImmutableMap.copyOf(
-              thread.getSemantics().incompatibleNoTransitiveLoads()
-                  ? thread.globalFrame.getExportedBindings()
-                  : thread.globalFrame.getBindings()),
+          ImmutableMap.copyOf(thread.globalFrame.getExportedBindings()),
           thread.getTransitiveContentHashCode());
     }
 
diff --git a/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java b/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java
index 6392008..a7d6a96 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java
@@ -154,7 +154,6 @@
         "--incompatible_no_rule_outputs_param=" + rand.nextBoolean(),
         "--incompatible_no_support_tools_in_action_inputs=" + rand.nextBoolean(),
         "--incompatible_no_target_output_group=" + rand.nextBoolean(),
-        "--incompatible_no_transitive_loads=" + rand.nextBoolean(),
         "--incompatible_remap_main_repo=" + rand.nextBoolean(),
         "--incompatible_remove_native_maven_jar=" + rand.nextBoolean(),
         "--incompatible_restrict_named_params=" + rand.nextBoolean(),
@@ -207,7 +206,6 @@
         .incompatibleNoRuleOutputsParam(rand.nextBoolean())
         .incompatibleNoSupportToolsInActionInputs(rand.nextBoolean())
         .incompatibleNoTargetOutputGroup(rand.nextBoolean())
-        .incompatibleNoTransitiveLoads(rand.nextBoolean())
         .incompatibleRemapMainRepo(rand.nextBoolean())
         .incompatibleRemoveNativeMavenJar(rand.nextBoolean())
         .incompatibleRestrictNamedParams(rand.nextBoolean())
diff --git a/src/test/java/com/google/devtools/build/lib/skylark/SkylarkIntegrationTest.java b/src/test/java/com/google/devtools/build/lib/skylark/SkylarkIntegrationTest.java
index a09fc86..b8991cd 100644
--- a/src/test/java/com/google/devtools/build/lib/skylark/SkylarkIntegrationTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skylark/SkylarkIntegrationTest.java
@@ -1664,54 +1664,6 @@
   }
 
   @Test
-  public void testSymbolPropagateThroughImports() throws Exception {
-    setSkylarkSemanticsOptions("--incompatible_no_transitive_loads=false");
-    scratch.file("test/skylark/implementation.bzl", "def custom_rule_impl(ctx):", "  return None");
-
-    scratch.file(
-        "test/skylark/extension2.bzl",
-        "load('//test/skylark:implementation.bzl', 'custom_rule_impl')");
-
-    scratch.file(
-        "test/skylark/extension1.bzl",
-        "load('//test/skylark:extension2.bzl', 'custom_rule_impl')",
-        "",
-        "custom_rule = rule(implementation = custom_rule_impl)");
-
-    scratch.file(
-        "test/skylark/BUILD",
-        "load('//test/skylark:extension1.bzl', 'custom_rule')",
-        "custom_rule(name = 'cr')");
-
-    getConfiguredTarget("//test/skylark:cr");
-  }
-
-  @Test
-  public void testSymbolDoNotPropagateThroughImports() throws Exception {
-    setSkylarkSemanticsOptions("--incompatible_no_transitive_loads=true");
-    scratch.file("test/skylark/implementation.bzl", "def custom_rule_impl(ctx):", "  return None");
-
-    scratch.file(
-        "test/skylark/extension2.bzl",
-        "load('//test/skylark:implementation.bzl', 'custom_rule_impl')");
-
-    scratch.file(
-        "test/skylark/extension1.bzl",
-        "load('//test/skylark:extension2.bzl', 'custom_rule_impl')",
-        "",
-        "custom_rule = rule(implementation = custom_rule_impl)");
-
-    scratch.file(
-        "test/skylark/BUILD",
-        "load('//test/skylark:extension1.bzl', 'custom_rule')",
-        "custom_rule(name = 'cr')");
-
-    reporter.removeHandler(failFastHandler);
-    getConfiguredTarget("//test/skylark:cr");
-    assertContainsEvent("does not contain symbol 'custom_rule_impl'");
-  }
-
-  @Test
   public void testLoadSymbolTypo() throws Exception {
     scratch.file("test/skylark/ext1.bzl", "myvariable = 2");