remove push trigger for E2E workflow

Author: DellaBitta

.github/workflows/e2e-test.yml

@@ -16,7 +16,6 @@ name: E2E Smoke Tests
 
 # Allows REST trigger. Currently triggered by release-cli script during a staging run.
 on:
-  push:
   repository_dispatch:
     types: [staging-tests,canary-tests]