Revert "[CI] Fix detecting usage of private emails (#19394)"

This reverts commit efe5a5b.

Author: uditagarwal97

.github/workflows/email-check.yaml

@@ -21,30 +21,14 @@ jobs:
 
       - name: Extract author email
         id: author
-        env:
-          GH_TOKEN: ${{ github.token }}
         run: |
-          # Use Github GraphQL APIs to get the email associated with the PR author because this takes into account the GitHub settings for email privacy.
-          query='
-          query($login: String!) {
-            user(login: $login) {
-              email
-            }
-          }'
-
-          PR_AUTHOR=${{ github.event.pull_request.user.login }}
-
-          email=$(gh api graphql -f login="$PR_AUTHOR" -f query="$query" --jq '.data.user.email')
-          echo "EMAIL_AUTHOR_GH_UI=$email" >> "$GITHUB_OUTPUT"
-
+          git log -1
+          echo "EMAIL=$(git show -s --format='%ae' HEAD~0)" >> $GITHUB_OUTPUT
           # Create empty comment file
           echo "[]" > comments
 
-      # When EMAIL_AUTHOR_GH_UI is NULL, author's email is hidden in GitHub UI.
-      # In this case, we warn the user to turn off "Keep my email addresses private"
-      # setting in their account.
       - name: Validate author email
-        if: ${{ steps.author.outputs.EMAIL_AUTHOR_GH_UI == '' }}
+        if: ${{ endsWith(steps.author.outputs.EMAIL, 'noreply.github.com')  }}
         env:
           COMMENT: >-
             ⚠️ We detected that you are using a GitHub private e-mail address to contribute to the repo.<br/>
@@ -55,9 +39,6 @@ jobs:
           [{"body" : "$COMMENT"}]
           EOF
 
-          # Fail this job.
-          false
-
       - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 #v4.3.0
         if: always()
         with: