Revert "server: fix return of visibilityQuery function"

This reverts commit 32f4bee5e8.

It is the right thing to do in theory, but it doesn't work.
I hate typeorm.

packages/backend/src/server/api/common/generate-visibility-query.ts

@@ -8,10 +8,10 @@ export function visibilityQuery(q: SelectQueryBuilder<Note>, meId?: User['id'] |
 		.from(() => q, 'note');
 
 	if (meId == null) {
-		superQuery.where('note_visible(note.id, null)');
+		superQuery.where('note_visible(note.id, null);');
 	} else {
 		superQuery.where('note_visible(note.id, :meId)', { meId });
 	}
 
-	return superQuery;
+	return q;
 }