Avoid Jax breaking the mypy Gitlab CI

Author: inducer

.github/workflows/ci.yml

@@ -51,6 +51,8 @@ jobs:
             run: |
                 curl -L -O https://tiker.net/ci-support-v0
                 . ./ci-support-v0
+                CONDA_ENVIRONMENT=.test-conda-env-py3.yml
+                sed -i "/jax/ d" "$CONDA_ENVIRONMENT"
                 build_py_project_in_conda_env
                 python -m pip install mypy pytest
                 ./run-mypy.sh