diff --git a/core/src/components/app/app.tsx b/core/src/components/app/app.tsx
index 5fa1fc5eaf..4772777505 100644
--- a/core/src/components/app/app.tsx
+++ b/core/src/components/app/app.tsx
@@ -25,8 +25,6 @@ export class App {
     this.deviceHacks = this.config.getBoolean('deviceHacks', false);
   }
 
-  testing() {}
-
   hostData() {
     const mode = this.config.get('mode');
     const hoverCSS = this.config.getBoolean('hoverCSS', false);