Revert "Still need to drift, regardless of rebuild of tasks"

This reverts commit d5191f16.

src/runner.c

@@ -765,6 +765,9 @@ static void runner_do_drift(struct cell *c, struct engine *e) {
   c->updated = 0;
   c->g_updated = 0;
 
+  /* Should we abort as a rebuild has been triggered ? */
+  if (e->forcerebuild) return;
+
   /* Do we need to drift ? */
   if (!e->drift_all && !cell_is_drift_needed(c, ti_current)) return;