revwalk: remove tautologic condition for hiding a commit

The contition cannot be reached with `commit->uninteresting` being true:
either a `break` or a `continue` statement will be hit in this case.

src/revwalk.c

@@ -426,7 +426,7 @@ static int limit_list(git_commit_list **out, git_revwalk *walk, git_commit_list
 			break;
 		}
 
-		if (!commit->uninteresting && walk->hide_cb && walk->hide_cb(&commit->oid, walk->hide_cb_payload))
+		if (walk->hide_cb && walk->hide_cb(&commit->oid, walk->hide_cb_payload))
 			continue;
 
 		time = commit->time;