Run e2e tests only on release and main branch

Signed-off-by: Shiva Krishna, Merla <[email protected]>

Author: shivamerla

.github/workflows/e2e.yml

@@ -20,7 +20,6 @@ on:
     types:
       - completed
     branches:
-      - "pull-request/**"
       - main
       - release-*