Removing an XFAIL which shouldn't apply. We no longer care about MSVC 9, and this test probably should not have been XFAILed everywhere regardless. The test passes on Windows with MSVC 12.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@209148 91177308-0d34-0410-b5e6-96231b3b80d8

test/PCH/pr4489.c

@@ -2,12 +2,6 @@
 // RUN: echo > %t.empty.c
 // RUN: %clang -include %t -x c %t.empty.c -emit-llvm -S -o -
 
-// FIXME: This test is forcibly disabled, it is flaky on the clang-i686-xp-msvc9
-// buildbot.
-//
-// RUN: false
-// XFAIL: *
-
 // PR 4489: Crash with PCH
 // PR 4492: Crash with PCH (round two)
 // PR 4509: Crash with PCH (round three)