[clang-tidy][NFC] Remove the ObjCModuleTest.cpp unit test (#185832)

These unit tests only duplicate the tests in
`clang-tools-extra/test/clang-tidy/checkers/objc/forbidden-subclassing.m`.

clang-tools-extra/docs/clang-tidy/Contributing.rst

@@ -120,7 +120,6 @@ The Directory Structure
   |-- ClangTidyTest.h
   |-- GoogleModuleTest.cpp
   |-- LLVMModuleTest.cpp
-  |-- ObjCModuleTest.cpp
       ...
 
 

clang-tools-extra/unittests/clang-tidy/CMakeLists.txt

@@ -30,7 +30,6 @@ add_extra_unittest(ClangTidyTests
   LLVMModuleTest.cpp
   ModernizeModuleTest.cpp
   NamespaceAliaserTest.cpp
-  ObjCModuleTest.cpp
   OptionsProviderTest.cpp
   OverlappingReplacementsTest.cpp
   UsingInserterTest.cpp

clang-tools-extra/unittests/clang-tidy/ObjCModuleTest.cpp

@@ -1,48 +0,0 @@
-//===---- ObjCModuleTest.cpp - clang-tidy ---------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "ClangTidyTest.h"
-#include "gtest/gtest.h"
-#include "objc/ForbiddenSubclassingCheck.h"
-
-using namespace clang::tidy::objc;
-
-namespace clang {
-namespace tidy {
-namespace test {
-
-TEST(ObjCForbiddenSubclassing, AllowedSubclass) {
-  std::vector<ClangTidyError> Errors;
-  runCheckOnCode<ForbiddenSubclassingCheck>(
-      "@interface Foo\n"
-      "@end\n"
-      "@interface Bar : Foo\n"
-      "@end\n",
-      &Errors,
-      "input.m");
-  EXPECT_EQ(0ul, Errors.size());
-}
-
-TEST(ObjCForbiddenSubclassing, ForbiddenSubclass) {
-  std::vector<ClangTidyError> Errors;
-  runCheckOnCode<ForbiddenSubclassingCheck>(
-      "@interface UIImagePickerController\n"
-      "@end\n"
-      "@interface Foo : UIImagePickerController\n"
-      "@end\n",
-      &Errors,
-      "input.m");
-  EXPECT_EQ(1ul, Errors.size());
-  EXPECT_EQ(
-      "Objective-C interface 'Foo' subclasses 'UIImagePickerController', which is not intended to be subclassed",
-      Errors[0].Message.Message);
-}
-
-} // namespace test
-} // namespace tidy
-} // namespace clang

llvm/utils/gn/secondary/clang-tools-extra/unittests/clang-tidy/BUILD.gn

@@ -43,7 +43,6 @@ unittest("ClangTidyTests") {
     "LexerUtilsTest.cpp",
     "ModernizeModuleTest.cpp",
     "NamespaceAliaserTest.cpp",
-    "ObjCModuleTest.cpp",
     "OptionsProviderTest.cpp",
     "OverlappingReplacementsTest.cpp",
     "ReadabilityModuleTest.cpp",