chore: Removes pull_request event

.github/workflows/task-1.yaml

@@ -1,16 +1,12 @@
 name: task-1-workflow
 run-name: Task 1 workflow
-on: [push, pull_request]
+on: [push]
 jobs:
   example-job:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Lists PRs branches
-        run: echo "PR base ${{ github.base_ref }} head ${{ github.head_ref }}"
-        if: ${{ github.event_name == 'pull_request' }}
       - name: Lists push branch
         run: echo 'Push branch ${{ github.ref }}, commit ref ${{ github.sha }}'
-        if: ${{ github.event_name == 'push' }}
       - name: Lists files in repo
         run: ls -alR