Update .github/workflows/presubmit-tests.yml

Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>

Author: averikitsch

.github/workflows/presubmit-tests.yml

@@ -34,7 +34,6 @@ jobs:
           chmod +x toolbox
 
       - name: Install Extension
-<<<<<<< ci-presubmit
         run: npx gemini extensions validate .
         env:
           GEMINI_API_KEY: "placeholder"