Removed system message on /msg success (#3579)

api/command.go

@@ -249,7 +249,7 @@ func handleResponse(c *Context, w http.ResponseWriter, response *model.CommandRe
 		if _, err := CreatePost(c, post, true); err != nil {
 			c.Err = model.NewLocAppError("command", "api.command.execute_command.save.app_error", nil, "")
 		}
-	} else if response.ResponseType == model.COMMAND_RESPONSE_TYPE_EPHEMERAL {
+	} else if response.ResponseType == model.COMMAND_RESPONSE_TYPE_EPHEMERAL && response.Text != "" {
 		post.Message = response.Text
 		post.CreateAt = model.GetMillis()
 		SendEphemeralPost(

api/command_msg.go

@@ -88,7 +88,7 @@ func (me *msgProvider) DoCommand(c *Context, channelId string, message string) *
 					}
 				}
 
-				return &model.CommandResponse{GotoLocation: c.GetTeamURL() + "/channels/" + channelName, Text: c.T("api.command_msg.success"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+				return &model.CommandResponse{GotoLocation: c.GetTeamURL() + "/channels/" + channelName, Text: "", ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
 			}
 		}
 	}