When depickme-ing, only requeue pickmes that conflict-pickme

Requeueing all pickmes is a massive performance drop in real-world enviroments.

When a pickme is removed, only requeue pickmes who'se tags might be cleared by a recheck now that the pickme is gone.
These variable names are too abstract even if the reference is nearby. Please use full words here.

Maybe `ids_in_push`, `get_req`, `enqueue` if you want to shorten the function names.