Revert "WIP: Apply a patch on llvm-project"

This reverts commit dae6502471042845cb6b693ecbf9178fe53314a4.

Author: mstorsjo

build-llvm.sh

@@ -152,7 +152,6 @@ if [ -n "$SYNC" ] || [ -n "$CHECKOUT" ]; then
             ;;
         esac
     fi
-    GIT_COMMITTER_NAME="temp" GIT_COMMITTER_EMAIL="temp" git am -3 --keep-non-patch ../patches/llvm-project/*.patch
     cd ..
 fi