Remove --experimental_enable_objc_cc_deps

This was flipped in 2017

Closes #16641.

PiperOrigin-RevId: 5556482
Change-Id: I2fba6db5095f144f558fa448ec26b97cef9eb8ea

src/main/java/com/google/devtools/build/lib/rules/objc/MultiArchBinarySupport.java

@@ -465,14 +465,7 @@ public static ImmutableMap<String, BuildOptions> handleApplePlatforms(
 
       // The cpu flag will be set by platform mapping if a mapping exists.
       splitOptions.get(PlatformOptions.class).platforms = ImmutableList.of(platform);
-      if (splitOptions.get(ObjcCommandLineOptions.class).enableCcDeps) {
-        // Only set the (CC-compilation) configs for dependencies if explicitly required by the
-        // user.
-        // This helps users of the iOS rules who do not depend on CC rules as these config values
-        // require additional flags to work (e.g. a custom crosstool) which now only need to be
-        // set if this feature is explicitly requested.
-        setAppleCrosstoolTransitionPlatformConfiguration(buildOptions, splitOptions, platform);
-      }
+      setAppleCrosstoolTransitionPlatformConfiguration(buildOptions, splitOptions, platform);
       AppleCommandLineOptions appleCommandLineOptions =
           splitOptions.get(AppleCommandLineOptions.class);
       // Set the configuration distinguisher last, as the method
@@ -604,13 +597,7 @@ public static ImmutableMap<String, BuildOptions> handleAppleCpus(
       appleCommandLineOptions.appleSplitCpu = cpu;
 
       String platformCpu = ApplePlatform.cpuStringForTarget(platformType, cpu);
-      if (splitOptions.get(ObjcCommandLineOptions.class).enableCcDeps) {
-        // Only set the (CC-compilation) CPU for dependencies if explicitly required by the user.
-        // This helps users of the iOS rules who do not depend on CC rules as these CPU values
-        // require additional flags to work (e.g. a custom crosstool) which now only need to be
-        // set if this feature is explicitly requested.
-        setAppleCrosstoolTransitionCpuConfiguration(buildOptions, splitOptions, platformCpu);
-      }
+      setAppleCrosstoolTransitionCpuConfiguration(buildOptions, splitOptions, platformCpu);
       // Set the configuration distinguisher last, as setAppleCrosstoolTransitionCpuConfiguration
       // will set this value to the Apple CROSSTOOL configuration distinguisher, and we want to make
       // sure it's set for the right platform instead in this split transition.

src/main/java/com/google/devtools/build/lib/rules/objc/ObjcCommandLineOptions.java

@@ -57,18 +57,6 @@ public class ObjcCommandLineOptions extends FragmentOptions {
   )
   public boolean runMemleaks;
 
-  @Option(
-    name = "experimental_enable_objc_cc_deps",
-    defaultValue = "true",
-    documentationCategory = OptionDocumentationCategory.TOOLCHAIN,
-    metadataTags = {OptionMetadataTag.INCOMPATIBLE_CHANGE},
-    effectTags = {OptionEffectTag.LOADING_AND_ANALYSIS},
-    help =
-        "Allows objc_* rules to depend on cc_library and causes any objc dependencies to be "
-            + "built with --cpu set to \"ios_<--ios_cpu>\" for any values in --ios_multi_cpu."
-  )
-  public boolean enableCcDeps;
-
   @Option(
     name = "experimental_objc_fastbuild_options",
     defaultValue = "-O0,-DDEBUG=1",
@@ -167,7 +155,6 @@ public class ObjcCommandLineOptions extends FragmentOptions {
   @Override
   public FragmentOptions getExec() {
     ObjcCommandLineOptions exec = (ObjcCommandLineOptions) getDefault();
-    exec.enableCcDeps = enableCcDeps;
     exec.incompatibleAvoidHardcodedObjcCompilationFlags =
         incompatibleAvoidHardcodedObjcCompilationFlags;
     exec.incompatibleDisallowSdkFrameworksAttributes = incompatibleDisallowSdkFrameworksAttributes;