[libc++abi] Don't use a .sh.cpp test for uncaught_exception

Otherwise, we don't seem to get the DYLD_LIBRARY_PATH set up correctly
and the tests are run against the system libc++abi dylib.

llvm-svn: 358937
GitOrigin-RevId: c86011f5bc35a3ad7bd0698a58a59f7bb2e7c94a
1 file changed