Update unittests-openmpi.yml

Author: jan-janssen

.github/workflows/unittests-openmpi.yml

@@ -29,9 +29,8 @@ jobs:
         environment-file: .ci_support/environment-openmpi.yml
     - name: Setup
       shell: bash -l {0}
-      run: |
-        pip install --no-deps .
+      run: pip install --no-deps .
     - name: Test
       shell: bash -l {0}
       timeout-minutes: 5
-      run: coverage run --omit pylammpsmpi/_version.py -m unittest discover tests
+      run: python -m unittest discover tests