Revert "fix org-capture error "The mark is not set now, so there is no region""

This reverts commit 0759c98dddd51dc4571ed1d31600c13fa764bb8a.

Even though it fixes the problem for all use cases I am aware of, this
is not the best fix because it doesn't address the root cause of the problem.
org-capture: better fix for error "The mark is not set now, ..."