Remove snapshot tests

Author: hansthen

.github/workflows/test_latest_branca.yml

@@ -33,4 +33,4 @@ jobs:
       run: |
         micromamba remove branca --yes --force
         python -m pip install git+https://github.com/python-visualization/branca.git
-        python -m pytest -vv --ignore=tests/selenium --ignore=tests/playwright
+        python -m pytest -vv --ignore=tests/selenium --ignore=tests/playwright --ignore=tests/snapshots