Remove conda environment activation

Author: PussInDasBoot

.github/workflows/hiperseis_main_ci.yml

@@ -1,4 +1,5 @@
 # This workflow is setup by Fei Zhang to use Github Actions 2020-09-14
+# Updated by Melyn Roberts 2025 June to run tests on Python 3.6.8 as designated in linux startup script
 
 name: hiperseis_main_ci
 
@@ -38,9 +39,6 @@ jobs:
         source setup_scripts/conda_env_linux.sh hiperseis
     - name: Running pytest
       run: |
-        eval "$(conda shell.bash hook)"
-        conda init
-        conda activate hiperseis
         pip install -r tests/requirements.txt
         pytest --cov --cov-report=xml ./tests
     - name: Upload coverage reports to Codecov