CMake: INotyfy is unused, no reason to check for it
INotyfy is unused since 45607b95cbb72b72eeefd7785eff2a1743bb6400
Merge pull request #753 from LebedevRI/cmake-inotify-is-unused

CMake: INotyfy is unused, no reason to check for it
Should we ever need it again we can still re-enable it.