Remove testing branch checkout.

Signed-off-by: Caroline Russell <[email protected]>

.github/workflows/snapshot-tests.yml

@@ -36,8 +36,6 @@ jobs:
            git clone https://github.com/appthreat/cdxgen-samples.git original_snapshots
            python3.12 -m venv .venv
            source .venv/bin/activate && pip install -r test/diff/requirements.txt
-           cd original_snapshots
-           git checkout feature/expand-snapshots
 
       - name: Generate scripts
         run: |