[gn] Support dots in CMake paths in the sync script

Some file paths use dots to pick up sources from parent directories.

Differential Revision: https://reviews.llvm.org/D60734

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@358774 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/sanitizer_common/CMakeLists.txt b/lib/sanitizer_common/CMakeLists.txt
index 094d829..7579416 100644
--- a/lib/sanitizer_common/CMakeLists.txt
+++ b/lib/sanitizer_common/CMakeLists.txt
@@ -119,7 +119,6 @@
   sanitizer_common_interceptors.inc
   sanitizer_common_interceptors_format.inc
   sanitizer_common_interceptors_ioctl.inc
-  sanitizer_common_interceptors_vfork_aarch64.inc.S
   sanitizer_common_interface.inc
   sanitizer_common_interface_posix.inc
   sanitizer_common_syscalls.inc