The CMakeManager uses createImportJob on reload which was previously
stopping on known folders. This lead to various issues, esp. when
switching branches we sometimes missed new contents in folders etc.
I don't remember anymore why this whole logic existed before,
potentially some not-so-smart performance optimization which breaks
things. Since I didn't add good comments back then, lets remove it
for now and see how it works. If things become slow we can always
optimize later on.