Revert "Make PyBaMM tests actually run"

This reverts commit fff2cdd.

Author: agriyakhetarpal

.github/workflows/build_wheels.yml

@@ -49,6 +49,8 @@ jobs:
           CIBW_REPAIR_WHEEL_COMMAND: delvewheel repair --add-path C:/Windows/System32 -w {dest_dir} {wheel}
           CIBW_TEST_EXTRAS: "dev"
           CIBW_TEST_COMMAND: |
+            python -m pytest {project}/tests
+
             git clone https://github.com/pybamm-team/PyBaMM.git pybamm-clone-for-tests
             cd pybamm-clone-for-tests
             pip install -e ".[all,dev,jax]"