Delete Python rules from Bazel

Sets up Bazel's unit tests to use the implementation from rules_python

PiperOrigin-RevId: 681905647
Change-Id: I4739f70f1da35cf1d205a3da1eaa180c2c7d0ab6
diff --git a/src/test/java/com/google/devtools/build/lib/testutil/TestConstants.java b/src/test/java/com/google/devtools/build/lib/testutil/TestConstants.java
index f00a6ce..1045324 100644
--- a/src/test/java/com/google/devtools/build/lib/testutil/TestConstants.java
+++ b/src/test/java/com/google/devtools/build/lib/testutil/TestConstants.java
@@ -127,8 +127,10 @@
   /* Prefix for loads from rules_cc */
   public static final String RULES_CC = "@rules_cc//cc";
 
-  /** The repo/package rules_python is rooted at. If empty, builtin rules are used. */
-  public static final String RULES_PYTHON_PACKAGE_ROOT = "";
+  /**
+   * The repo/package rules_python is rooted at. If empty, builtin rules are used.
+   */
+  public static final String RULES_PYTHON_PACKAGE_ROOT = "@@rules_python+/";
 
   public static final ImmutableList<String> DOCS_RULES_PATHS = ImmutableList.of(
       "src/main/java/com/google/devtools/build/lib/rules");