Remove 'RUN: false' from Driver/response-file.c

[krasimir]

Summary

It seems that rL292518 introduced a RUN: false, but the continuation rL292545
forgot to remove it back.

This has flown under the radar, because it's a long test and doesn't get
executed by default during sanity testing.

To test:
$ cd llvm_build
$ ./bin/llvm-lit --param run_long_tests=true tools/clang/test/Driver/response-file.c

@rsmith: have a look if this change is OK please.

[bkramer]

lg. I assume the test passes with the RUN: false removed?

[krasimir]

@bkramer: yes, it passes with RUN: false removed

test/Driver/response-file.c

 // REQUIRES: long_tests
 
-// RUN: false
-
 // Check that clang is able to process short response files
 // Since this is a short response file, clang must not use a response file
 // to pass its parameters to other tools. This is only necessary for a large
 // number of parameters.
 // RUN: echo "-DTEST" > %t.0.txt
 // RUN: %clang -E @%t.0.txt %s -v 2>&1 | FileCheck %s -check-prefix=SHORT
 // SHORT-NOT: Arguments passed via response file
 // SHORT: extern int it_works;