[mlir] Remove a redundant call to std::unique_ptr<T>::get (NFC)#139409

kazutakahirata merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

kazutakahirata:cleanup_clang_tidy_readability_redundant_smartptr_get_mlirkazutakahirata/llvm-project:cleanup_clang_tidy_readability_redundant_smartptr_get_mlirCopy head branch name to clipboard