[libc++abi][libunwind] Don't override libc++'s handling of exception features

0e04342ae039 simplified exceptions-related configurations for libc++abi
and libunwind by reusing the logic in libc++. However, it missed the fact
that libc++abi and libunwind were overriding libc++'s handling of exceptions.

This commit removes special handling in libc++abi and libunwind to use
the logic in libc++, which is the right one.

GitOrigin-RevId: 168681abce63d9cc0cec24cfc1d0caef6fa3a25f
1 file changed
tree: 160993e098eeb4b5ca88713f8b82654d2dcfb374
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT