removeConversation method
Implementation
void removeConversation(int index) {
engineProvider.engine?.removeConversation(
_conversations[index].conversationType ??
RCIMIWConversationType.invalid,
_conversations[index].targetId ?? '',
_conversations[index].channelId,
callback: IRCIMIWRemoveConversationCallback(
onConversationRemoved: (int? code) {
initConversations();
},
));
}