Remove the obsolete exec_tools attribute from genrule.

DO NOT SUBMIT.

Part of bazelbuild#19132.

Author: katre

src/main/java/com/google/devtools/build/lib/bazel/BazelConfiguration.java

@@ -40,20 +40,10 @@ public static class Options extends FragmentOptions {
         help = "If enabled, visibility checking also applies to toolchain implementations.")
     public boolean checkVisibilityForToolchains;
 
-    @Option(
-        name = "incompatible_remove_exec_tools",
-        defaultValue = "false",
-        documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
-        effectTags = {OptionEffectTag.BUILD_FILE_SEMANTICS},
-        metadataTags = {OptionMetadataTag.INCOMPATIBLE_CHANGE},
-        help = "If enabled, use of genrule's exec_tools attribute will cause an error..")
-    public boolean removeExecTools;
-
     @Override
     public FragmentOptions getExec() {
       Options exec = (Options) getDefault();
       exec.checkVisibilityForToolchains = checkVisibilityForToolchains;
-      exec.removeExecTools = removeExecTools;
 
       return exec;
     }

src/main/java/com/google/devtools/build/lib/bazel/rules/genrule/BUILD

@@ -18,7 +18,6 @@ java_library(
         "//src/main/java/com/google/devtools/build/lib/analysis:analysis_cluster",
         "//src/main/java/com/google/devtools/build/lib/analysis:config/execution_transition_factory",
         "//src/main/java/com/google/devtools/build/lib/analysis:rule_definition_environment",
-        "//src/main/java/com/google/devtools/build/lib/bazel:bazel_configuration",
         "//src/main/java/com/google/devtools/build/lib/packages",
         "//src/main/java/com/google/devtools/build/lib/rules/genrule",
         "//src/main/java/com/google/devtools/build/lib/util:filetype",

src/main/java/com/google/devtools/build/lib/bazel/rules/genrule/BazelGenRule.java

@@ -16,8 +16,6 @@
 
 import com.google.devtools.build.lib.analysis.CommandHelper;
 import com.google.devtools.build.lib.analysis.RuleContext;
-import com.google.devtools.build.lib.bazel.BazelConfiguration;
-import com.google.devtools.build.lib.packages.BuildType;
 import com.google.devtools.build.lib.packages.Type;
 import com.google.devtools.build.lib.rules.genrule.GenRuleBase;
 
@@ -33,24 +31,4 @@ protected boolean isStampingEnabled(RuleContext ruleContext) {
     }
     return ruleContext.attributes().get("stamp", Type.BOOLEAN);
   }
-
-  // TODO(https://github.com/bazelbuild/bazel/issues/19132): Remove this override once downstream
-  // projects are migrated.
-  @Override
-  protected CommandHelper.Builder commandHelperBuilder(RuleContext ruleContext) {
-    BazelConfiguration.Options bazelOptions =
-        ruleContext.getConfiguration().getOptions().get(BazelConfiguration.Options.class);
-
-    if (bazelOptions.removeExecTools
-        && ruleContext.attributes().has("exec_tools", BuildType.LABEL_LIST)
-        && !ruleContext.attributes().get("exec_tools", BuildType.LABEL_LIST).isEmpty()) {
-      ruleContext.attributeError(
-          "exec_tools", "genrule.exec_tools has been removed, use tools instead");
-    }
-
-    return CommandHelper.builder(ruleContext)
-        .addToolDependencies("tools")
-        .addToolDependencies("exec_tools")
-        .addToolDependencies("toolchains");
-  }
 }

src/main/java/com/google/devtools/build/lib/bazel/rules/genrule/BazelGenRuleRule.java

@@ -46,23 +46,6 @@ public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env)
                 .cfg(ExecutionTransitionFactory.createFactory())
                 .value(env.getToolsLabel(GENRULE_SETUP_LABEL)))
 
-        // TODO(https://github.com/bazelbuild/bazel/issues/19132): Remove this once downstream
-        // projects are migrated.
-        /* <!-- #BLAZE_RULE(genrule).ATTRIBUTE(exec_tools) -->
-        <b>Deprecated. Use <a href="#genrule.tools"><code>tools</code></a> instead.</b>
-
-        <p>
-          There was a period of time when <code>exec_tools</code> and <code>tools</code> behaved
-          differently, but they are now equivalent and the Blaze team will be migrating all uses of
-          <code>exec_tools</code> to <code>tools</code>.
-        </p>
-        <!-- #END_BLAZE_RULE.ATTRIBUTE --> */
-        .add(
-            attr("exec_tools", LABEL_LIST)
-                .cfg(ExecutionTransitionFactory.createFactory())
-                .allowedFileTypes(FileTypeSet.ANY_FILE)
-                .dontCheckConstraints())
-
         // TODO(bazel-team): stamping doesn't seem to work. Fix it or remove attribute.
         .add(attr("stamp", BOOLEAN).value(false))
         .build();