Remove E2E_ENABLED GHA flag (#147)

E2E tests should always run

Author: max-rozen-oss-db

.github/workflows/ci.yml

@@ -18,7 +18,6 @@ jobs:
       - run: uv run pytest --ignore=tests/test_e2e.py --ignore=tests/test_e2e_tracing.py
 
   e2e:
-    if: vars.E2E_ENABLED == 'true'
     runs-on: ubuntu-latest
     env:
       UCODE_TEST_WORKSPACE: ${{ secrets.UCODE_TEST_WORKSPACE }}