[clang] [Clang] Ensure "=default"ed function can be deleted when used as an extension in C++03 (PR #90725)

[via cfe-commits]

================
@@ -9767,7 +9767,9 @@ bool Sema::ShouldDeleteSpecialMember(CXXMethodDecl *MD,
     return false;
   CXXRecordDecl *RD = MD->getParent();
   assert(!RD->isDependentType() && "do deletion after instantiation");
-  if (!LangOpts.CPlusPlus || (!LangOpts.CPlusPlus11 && !RD->isLambda()) ||
+  if (!LangOpts.CPlusPlus ||
----------------
cor3ntin wrote:

I would try to remove it and see if tests pass (which i suspect they will)

https://github.com/llvm/llvm-project/pull/90725