Revert "Core/RBAC: Create new permissions 'Skips needed requirements to use channel check', 'Filter whispers', 'Allow say chat between factions'. Last one needs config option to be enabled and both sender and receiver to have the permission"

This reverts commit 18562a43bafc43cee910114c8e869c8e1e8c361d.

Conflicts:
	src/server/game/Handlers/ChatHandler.cpp