Ignore unsupported test

Author: bjorn3

scripts/test_rustc_tests.sh

@@ -64,6 +64,7 @@ rm src/test/incremental/lto.rs # requires lto
 
 rm -r src/test/run-make/emit-shared-files # requires the rustdoc executable in build/bin/
 rm -r src/test/run-make/unstable-flag-required # same
+rm -r src/test/run-make/emit-named-files # requires full --emit support
 
 rm src/test/pretty/asm.rs # inline asm
 rm src/test/pretty/raw-str-nonexpr.rs # same