[clang] [clang-tools-extra] [clang] Do not share ownership of `PreprocessorOptions` (PR #133467)

[Jan Svoboda via cfe-commits]

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@@ -272,9 +272,6 @@ class CompilerInvocation : public CompilerInvocationBase {
   std::shared_ptr<HeaderSearchOptions> getHeaderSearchOptsPtr() {
     return HSOpts;
   }
-  std::shared_ptr<PreprocessorOptions> getPreprocessorOptsPtr() {
-    return PPOpts;
-  }
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jansvoboda11 wrote:

This was the primary goal of this PR.

https://github.com/llvm/llvm-project/pull/133467