[klibc] dash: clean up mksyntax rules; remove mksignames

mksyntax was run twice for no good reason (and possible to the
detriment of parallel execution); use a dummy rule like for
mknodes.

mksignames isn't used (and it was never cross-compile correct.)
Remove it.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2 files changed