rm mta support

lib/src/fluwx_iml.dart

@@ -126,7 +126,6 @@ Future register(
     {String appId,
     bool doOnIOS: true,
     bool doOnAndroid: true,
-    bool enableMTA: false,
     String universalLink}) async {
   return await _channel.invokeMethod("registerApp", {
     "appId": appId,