[clang] [NFC][analyzer] Simplify ownership of checker objects (PR #128887)

[Balazs Benics via cfe-commits]

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@@ -185,13 +185,11 @@ class CheckerManager {
                                        StringRef OptionName,
                                        StringRef ExpectedValueDesc) const;
 
-  using CheckerRef = CheckerBase *;
   using CheckerTag = const void *;
-  using CheckerDtor = CheckerFn<void ()>;
 
-//===----------------------------------------------------------------------===//
-// Checker registration.
-//===----------------------------------------------------------------------===//
+  //===----------------------------------------------------------------------===//
+  // Checker registration.
+  //===----------------------------------------------------------------------===//
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steakhal wrote:

We could as well just drop this comment.

https://github.com/llvm/llvm-project/pull/128887