um: remove redundant 'export LDFLAGS' in arch/x86/Makefile.um

This is already exported by the top-level Makefile.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
This commit is contained in:
Masahiro Yamada 2018-07-12 17:01:31 +09:00
commit 3a477d4efc