libev: drop old glibc dep

This causes needless deps for a bug over 10 years old.
Merge the cleanup from upstream.

BUG=chromium:1042641
TEST=CQ passes

Change-Id: I2b4f39e6d6609c6e69788ff8ab358ce6fc35895d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2194825
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
1 file changed