There are currently 288 questions tagged priority.
This doesn't seem like a useful tag to me, as the word priority is used in many different contexts. Most of the questions seem to fall into one of three categories:
These are questions about the implementation or use of priority queues as a data structure.
Although the correct term is precedence, some people seem to misuse the word priority for it anyway.
There are several questions about the scheduling priority of processes or threads.
The other uses of priority seem to be mostly one-offs that don't really need any such tag. In these cases we can simply remove it.