Do not remove system includes in packed cc-runtime

Author: mintsuki

.github/workflows/pack.yml

@@ -17,7 +17,7 @@ jobs:
         run: |
           set -e
           cat assembly.h int_endianness.h int_types.h int_lib.h int_util.h *.inc *.c > /tmp/cc-runtime.c
-          sed -i '/#include/d' /tmp/cc-runtime.c
+          sed -i '/#include "/d' /tmp/cc-runtime.c
 
       - name: Push packed cc-runtime
         run: |