fix tests for channelGroupRemoveGroup()
fix tests for channelGroupRemoveGroup()

MattB101/java,NizarBoussarsar/java,MattB101/java,sweetticket/java,biddyweb/java,sweetticket/java,sweetticket/java,biddyweb/java,mohamed20102241/java,MattB101/java,VanThanh12195/java,ballbo/java,pranjalpatil/java,vyshakhbabji/java,mohamed20102241/java,vyshakhbabji/java,NizarBoussarsar/java,vyshakhbabji/java,VanThanh12195/java,biddyweb/java,pranjalpatil/java,ballbo/java,ballbo/java,mohamed20102241/java,pranjalpatil/java,VanThanh12195/java,NizarBoussarsar/java