Also force removing lib/judge as directory.

With a maintainer/inplace install, this should normally be a symlink,
but if the inplace-install rule failed halfway, then the directory
would have been created by the judgehost-create-dirs rule, but not
been replaced by the inplace-install-l rule afterwards.

(cherry picked from commit 9153aca)

Author: eldering

Makefile

@@ -285,7 +285,7 @@ inplace-postinstall-nginx: inplace-postinstall-permissions
 
 # Removes created symlinks; generated logs, submissions, etc. remain in output subdir.
 inplace-uninstall-l:
-	rm -f $(judgehost_libjudgedir)
+	rm -rf $(judgehost_libjudgedir)
 	rm -rf $(judgehost_bindir)
 
 # Rules to configure and build for a Coverity scan.