Do not set -fsjlj-exceptions locally for Windows am: 9057c2f748 am: f3d1894025 am: 34edd252ec

Original change: https://android-review.googlesource.com/c/platform/external/libcxx/+/1424491

Change-Id: I7988b8d2e96d7089aad0461fb886f291b5e96d65