Remove unused function RocketChat.createPrivateGroup

packages/rocketchat-lib/server/functions/createPrivateGroup.js

-/* globals RocketChat */
-RocketChat.createPrivateGroup = function(name, owner, members) {
-	name = s.trim(name);
-	owner = s.trim(owner);
-	members = [].concat(members);
-
-	if (!name) {
-		throw new Meteor.Error('error-invalid-name', 'Invalid name', { function: 'RocketChat.createPrivateGroup' });
-	}
-
-	if (!owner) {
-		throw new Meteor.Error('error-invalid-user', 'Invalid user', { function: 'RocketChat.createPrivateGroup' });
-	}
-
-	let nameValidation;
-	try {
-		nameValidation = new RegExp('^' + RocketChat.settings.get('UTF8_Names_Validation') + '$');
-	} catch (error) {
-		nameValidation = new RegExp('^[0-9a-zA-Z-_.]+$');
-	}
-
-	if (!nameValidation.test(name)) {
-		throw new Meteor.Error('error-invalid-name', 'Invalid name', { function: 'RocketChat.createPrivateGroup' });
-	}
-
-	const now = new Date();
-	if (!_.contains(members, owner)) {
-		members.push(owner);
-	}
-
-	// avoid duplicate names
-	let room = RocketChat.models.Rooms.findOneByName(name);
-	if (room) {
-		if (room.archived) {
-			throw new Meteor.Error('error-archived-duplicate-name', 'There\'s an archived channel with name ' + name, { function: 'RocketChat.createPrivateGroup', room_name: name });
-		} else {
-			throw new Meteor.Error('error-duplicate-channel-name', 'A channel with name \'' + name + '\' exists', { function: 'RocketChat.createPrivateGroup', room_name: name });
-		}
-	}
-
-	room = RocketChat.models.Rooms.createWithTypeNameUserAndUsernames('p', name, owner, members, { ts: now });
-
-	for (const username of members) {
-		const member = RocketChat.models.Users.findOneByUsername(username, { fields: { username: 1 }});
-		if (!member) {
-			continue;
-		}
-
-		const extra = { open: true };
-
-		if (username === owner) {
-			extra.ls = now;
-		}
-
-		RocketChat.models.Subscriptions.createWithRoomAndUser(room, member, extra);
-	}
-
-	// set owner
-	owner = RocketChat.models.Users.findOneByUsername(owner, { fields: { username: 1 }});
-	RocketChat.authz.addUserRoles(owner._id, ['owner'], room._id);
-
-	return {
-		rid: room._id
-	};
-};