histedit: remove redundant checks for unfinished histedit state...
histedit: remove redundant checks for unfinished histedit state
Both text-based and curses-based histedit already check for unfinished
operations (not just unfinished histedit), so there's no need to check
specifically for unfinished histedit.
Differential Revision:
https://phab.mercurial-scm.org/D11508