synchronize_user_enrolments toggles rocket chat group membership

[almanesa]

If the user is already a member of the group, calling this function would remove him from the group.
These lines should be removed as it does nothing useful.

esup-mod_rocketchat/locallib.php

Lines 307 to 314 in 508fa8f

	if (isset($rocketchatuser)
	&& array_key_exists($rocketchatuser->username, $rocketchatmembers)
	&& $rocketchatuser->username) {
	if ($rocketchatuser->username != get_config('mod_rocketchat', 'apiuser')
	&& $rocketchatuser->id != get_config('mod_rocketchat', 'apiuser')) {
	$rocketchatapimanager->unenrol_user_from_group($courseenrolment->rocketchatid, $rocketchatuser);
	}
	}

This function only maps active course enrollments to rocket chat group membership in one way.