Do not overwrite env vars from container

Author: dschwoerer

.github/workflows/test-mms.yml

@@ -40,9 +40,6 @@ jobs:
 
       - name: Run
         run: |
-          export HOME=/home/boutuser
-          export PYTHONPATH=/home/boutuser/BOUT-dev/build/tools/pylib/
-          export LD_LIBRARY_PATH=/usr/lib64/mpich/lib
           cd /home/boutuser/zoidberg/test/mms/
           # Run test
           make