Fix GoCompilationHelper to detect EXEC_ORIGIN when legacy crosstool fields are removed

RELNOTES: None.
PiperOrigin-RevId: 233934892
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CcToolchainProvider.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CcToolchainProvider.java
index a15f078..8ff522e 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CcToolchainProvider.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CcToolchainProvider.java
@@ -602,14 +602,6 @@
     return toolchainInfo.supportsEmbeddedRuntimes();
   }
 
-  /**
-   * Returns whether the toolchain supports EXEC_ORIGIN libraries resolution.
-   */
-  public boolean supportsExecOrigin() {
-    // We're rolling out support for this in the same release that also supports embedded runtimes.
-    return toolchainInfo.supportsEmbeddedRuntimes();
-  }
-
   /** Returns whether the toolchain supports the --start-lib/--end-lib options. */
   public boolean supportsStartEndLib(FeatureConfiguration featureConfiguration) {
     return toolchainInfo.supportsStartEndLib()