[clang] [clang][PAC] Fix builtins that claim address discriminated types are bitwise compatible (PR #154490)

[Peter Collingbourne via cfe-commits]

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@@ -656,8 +656,7 @@ class ASTContext : public RefCountedBase<ASTContext> {
   bool containsNonRelocatablePointerAuth(QualType T) {
     if (!isPointerAuthenticationAvailable())
       return false;
-    return findPointerAuthContent(T) ==
-           PointerAuthContent::AddressDiscriminatedData;
+    return findPointerAuthContent(T) != PointerAuthContent::None;
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pcc wrote:

Since this function and `containsAddressDiscriminatedPointerAuth` now do the same thing, can we remove one of them?

https://github.com/llvm/llvm-project/pull/154490