[llvm] Fix build failure caused by PR 68235 (PR #71219)

[Simon Pilgrim via llvm-commits]

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@@ -1268,25 +1216,7 @@ static llvm::AttributeList
 fixUpTypesInByValAndStructRetAttributes(llvm::FunctionType *fnType,
                                         llvm::AttributeList attrList) {
   auto &context = fnType->getContext();
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RKSimon wrote:

drop context?

https://github.com/llvm/llvm-project/pull/71219