PLT-7622 Improvements to server handling of webapp plugins (#7445)

* Improvements to server handling of webapp plugins

* Fix newline

* Update manifest function names

api4/system.go

@@ -244,7 +244,6 @@ func getClientConfig(c *Context, w http.ResponseWriter, r *http.Request) {
 	}
 
 	respCfg["NoAccounts"] = strconv.FormatBool(c.App.IsFirstUserAccount())
-	respCfg["Plugins"] = c.App.GetPluginsForClientConfig()
 
 	w.Write([]byte(model.MapToJson(respCfg)))
 }