The po.m4 file is deleted by the more recent autotools.bbclass
autotools_do_configure code which handles gettext. There is therefore
no point in patching the file anymore.
(From OE-Core rev: c3265281c3ab0979ec2753eb7580c39b005d5fa9)
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>