Remove workflow id cache internal external enabled

[arzonus]

What changed?
history.workflowIDCacheInternalEnabled and history.workflowIDCacheExternalEnabled have been removed

Why?
They've been enabled for sometime and the logic should be enabled by default

How did you test it?
Unit tests

[dkrotx]

Correct, I remember we introduced this purely to have an idea if it is safe to have the cache.
Cache with a small (a couple of second) TTL should always be fine since if perform requests to so many workflow-ids, we should certainly have a space to track them which is a waaaay smaller footprint.