Remove apple_common.multi_arch_split

Remove the apple_binary and apple_static_library tests. The tests involved hardcoded Starlark implementation of apple_binary that diverged from the implementation that is used.

Add a simple hardcoded implementation of the apple_platform_split_transition to tests. This keep the coverage of objc rules that are in builtins. (Also the implementations of multi_arch_split has diverged from apple_platform_split_transition).

RELNOTES[INC]: Removed multi_arch_split, use transition_support.apple_platform_split_transition from rules_apple instead.

https://github.com/bazelbuild/rules_apple/blob/master/apple/internal/transition_support.bzl#L608

PiperOrigin-RevId: 553171946
Change-Id: I874e8b9e39b291774a74b0192926521a3c88c103

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

@@ -44,7 +44,6 @@
 import com.google.devtools.build.lib.rules.cpp.CppSemantics;
 import com.google.devtools.build.lib.rules.cpp.UserVariablesExtension;
 import com.google.devtools.build.lib.rules.objc.ObjcProvider.Flag;
-import com.google.devtools.build.lib.starlarkbuildapi.SplitTransitionProviderApi;
 import com.google.devtools.build.lib.starlarkbuildapi.objc.AppleCommonApi;
 import java.util.Map;
 import javax.annotation.Nullable;
@@ -169,11 +168,6 @@ public ImmutableMap<String, String> getTargetAppleEnvironment(
         platform, xcodeConfig.getSdkVersionForPlatform(platform));
   }
 
-  @Override
-  public SplitTransitionProviderApi getMultiArchSplitProvider() {
-    return new MultiArchSplitTransitionProvider();
-  }
-
   @Override
   // This method is registered statically for Starlark, and never called directly.
   public ObjcProvider newObjcProvider(Dict<String, Object> kwargs, StarlarkThread thread)

src/main/java/com/google/devtools/build/lib/starlarkbuildapi/objc/AppleCommonApi.java

@@ -20,7 +20,6 @@
 import com.google.devtools.build.lib.analysis.config.transitions.StarlarkExposedRuleTransitionFactory;
 import com.google.devtools.build.lib.collect.nestedset.Depset;
 import com.google.devtools.build.lib.starlarkbuildapi.FileApi;
-import com.google.devtools.build.lib.starlarkbuildapi.SplitTransitionProviderApi;
 import com.google.devtools.build.lib.starlarkbuildapi.StarlarkRuleContextApi;
 import com.google.devtools.build.lib.starlarkbuildapi.apple.ApplePlatformApi;
 import com.google.devtools.build.lib.starlarkbuildapi.apple.AppleToolchainApi;
@@ -217,27 +216,6 @@ public interface AppleCommonApi<
   ImmutableMap<String, String> getTargetAppleEnvironment(
       XcodeConfigInfoApiT xcodeConfig, ApplePlatformApiT platform);
 
-  @StarlarkMethod(
-      name = "multi_arch_split",
-      doc =
-          "A configuration transition for rule attributes to build dependencies in one or more"
-              + " Apple platforms. <p>Use of this transition requires that the 'platform_type' and"
-              + " 'minimum_os_version' string attributes are defined and mandatory on the"
-              + " rule.</p><p>The value of the platform_type attribute will dictate the target"
-              + " architectures  for which dependencies along this configuration transition will"
-              + " be built.</p><p>Options are:</p><ul><li><code>ios</code>: architectures gathered"
-              + " from <code>--ios_multi_cpus</code>.</li><li><code>macos</code>: architectures"
-              + " gathered from <code>--macos_cpus</code>.</li><li><code>tvos</code>:"
-              + " architectures gathered from"
-              + " <code>--tvos_cpus</code>.</li><li><code>watchos</code>: architectures gathered"
-              + " from <code>--watchos_cpus</code>.</li></ul><p>minimum_os_version should be a"
-              + " dotted version string such as '7.3', and is used to set the minimum operating"
-              + " system on the configuration similarly based on platform type. For example,"
-              + " specifying platform_type 'ios' and minimum_os_version '8.0' will ensure that"
-              + " dependencies are built with minimum iOS version '8.0'.",
-      structField = true)
-  SplitTransitionProviderApi getMultiArchSplitProvider();
-
   @StarlarkMethod(
       name = "new_objc_provider",
       doc = "Creates a new ObjcProvider instance.",