Remove invalid assert in ScopedForceNormal destructor
Remove invalid assert in ScopedForceNormal destructor

commit 90db664635013f6e857ec696403f2164032410a8 introduced logic
to handle the case where the mode had been removed, but did not
get rid of the assert.

mawww/kakoune,mawww/kakoune,casimir/kakoune,jkonecny12/kakoune,casimir/kakoune,mawww/kakoune,casimir/kakoune,mawww/kakoune,jkonecny12/kakoune,jkonecny12/kakoune,casimir/kakoune,jkonecny12/kakoune