Unwind: remove unnecessary check

Linux/GNU on AArch64 EH ABI Level III is implemented using exception frame
tables as defined in LSB II.11.6.  The exception frame tables use the DWARF
Exception Header Encoding as described in LSB II.11.5.1.  We already defined the
appropriate definition _LIBUNWIND_SUPPORT_DWARF_UNWIND to enable this.

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@231580 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed