tools/coreutils: do not require gettext or gperf
The bootstrap configuration is set to require
gettext and gperf for regenerating documentation and headers.
However, these steps are skipped in favor
of not building documentation and using existing headers.
Signed-off-by: Michael Pratt <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16522
Signed-off-by: Robert Marko <[email protected]>