[gn build] Port f85ae05

Author: llvmgnsyncbot

llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn

@@ -143,8 +143,7 @@ copy("Headers") {
     "nmmintrin.h",
     "opencl-c-base.h",
     "opencl-c.h",
-    "openmp_wrappers/__clang_openmp_math.h",
-    "openmp_wrappers/__clang_openmp_math_declares.h",
+    "openmp_wrappers/__clang_openmp_device_functions.h",
     "openmp_wrappers/cmath",
     "openmp_wrappers/math.h",
     "pconfigintrin.h",