Fix rustc testsuite

Author: bjorn3

scripts/test_rustc_tests.sh

@@ -96,7 +96,7 @@ rm -r tests/run-make/llvm-location-discriminator-limit-dummy-span # same
 rm tests/ui/abi/stack-protector.rs # requires stack protector support
 rm -r tests/run-make/emit-stack-sizes # requires support for -Z emit-stack-sizes
 rm -r tests/run-make/optimization-remarks-dir # remarks are LLVM specific
-rm -r tests/ui/optimization-remark.rs # same
+rm -r tests/ui/codegen/remark-flag-functionality.rs # same
 rm -r tests/run-make/print-to-output # requires --print relocation-models
 
 # requires asm, llvm-ir and/or llvm-bc emit support