groff: Fix determinism issue
Sometimes bison would regenerate source files and sometimes it would not
This is likely related to the patching of generated files by on of the
patches.
Drop those changes and force the files to regenerate in all cases since
we depend on bison-native anyway. This ensures the results are always
consistent.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit
4449fa226e94f7124215c5ead43aadda7967f3af)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
