[clang-tools-extra] [clang-tidy] Merge `ClangTidyModuleRegistry.h` into `ClangTidyModule.h` (PR #173231)

[Victor Chernyakin via cfe-commits]

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@@ -9,17 +9,12 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANGTIDYMODULEREGISTRY_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANGTIDYMODULEREGISTRY_H
 
-#include "ClangTidyModule.h"
-#include "llvm/Support/Registry.h"
-
-namespace clang::tidy {
+// NOLINTBEGIN
 
-using ClangTidyModuleRegistry = llvm::Registry<ClangTidyModule>;
+#warning The ClangTidyModuleRegistry.h header is deprecated and will be removed in LLVM 24. All of the symbols it used to define have been moved into ClangTidyModule.h.
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localspook wrote:

Opened #173414

https://github.com/llvm/llvm-project/pull/173231