Makefile: remove m68k GCC 3.4 workaround

This code dates back to 2006, commit 483a0cf804df ("Fixes for gcc 3.4
based m68k toolchain,").

GCC 3.4 is so old. We do not support it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
1 file changed