If you just want to hide them from appearing in frontends [Kodi, Movian, HTSP] you can:
* Disable them in the channel list.
* Set a min-max channel range [in the access entry dialog].
* Use a tag to exclude certain channels.
Small note, some changes to the bouquets [by the provider] may undo your settings to some channels [depending on the method you use to hide them from users].
I recommend using a min-max number range [which shouldn't be affected by bouquet changes, well, it will if the provider updates the LCN to be within the allowed range].