WIP: removed stale error handling

currently, scripts seem to run fine. however I'm a bit worried about stack related issues. maybe i'll need to reset state->top as well? but not entirely sure

src/cmem.c

@@ -288,9 +288,6 @@ static void markRoots(CState *state)
     // mark the user defined roots
     markUserRoots(state);
 
-    // mark other misc. internally reserved objects
-    markObject(state, (CObj *)state->error);
-
     for (int i = 0; i < COBJ_MAX; i++)
         markObject(state, (CObj *)state->protoObjects[i]);