ld: Update tests for warning of "-z dynamic-undefined-weak ignored"

ld: Update tests for warning of "-z dynamic-undefined-weak ignored"

Update tests to expect warning of "-z dynamic-undefined-weak ignored"
from

commit 22b1ee183d19a92cc57859c04307d31c06792d13
Author: Alan Modra <amodra@gmail.com>
Date:   Thu Oct 12 13:19:10 2017 +1030

    Set dynamic_undefined_weak to zero for static PIEs

	* testsuite/ld-elf/pr22269b.d: Expect warning of
	"-z dynamic-undefined-weak ignored".
	* testsuite/ld-i386/pr19636-1j.d: Likewise.
	* testsuite/ld-i386/pr19636-1k.d: Likewise.
	* testsuite/ld-i386/pr19636-1l.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2j.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2k.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2l.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2m.d: Likewise.