fix getChatRoomConversationList api

Author: huangminlinux

ios/RCTJMessageModule/RCTJMessageModule.m

@@ -2407,8 +2407,7 @@ - (JMSGOptionalContent *)convertDicToJMSGOptionalContent:(NSDictionary *)dic {
  *
  */
 //static getChatRoomConversationList(callback) {
-RCT_EXPORT_METHOD(getChatRoomConversationList:(NSDictionary *)param
-                  successCallback:(RCTResponseSenderBlock)successCallback
+RCT_EXPORT_METHOD(getChatRoomConversationList:(RCTResponseSenderBlock)successCallback
                   failCallBack:(RCTResponseSenderBlock)failCallback) {
   [JMSGConversation allChatRoomConversation:^(id resultObject, NSError *error) {
     if (error) {