[lldb][NFC]Update debug (eh-frame) tests to work with new dwarwin MC …

…changes

Details:

D144999 potentially changes the debug format (from compact-unwind to dwarf).
Updated this test to no longer prefer debug-frame over eh-frame to be compatible with the new behaviour

Differential Revision: https://reviews.llvm.org/D152449

lldb/test/Shell/Unwind/prefer-debug-over-eh-frame.test

@@ -5,7 +5,6 @@
 # be thrown.
 
 # UNSUPPORTED: system-windows
-# XFAIL: system-darwin
 # REQUIRES: target-x86_64, native
 
 # RUN: %clang_host -g %p/Inputs/call-asm.c %p/Inputs/prefer-debug-over-eh-frame.s -o %t