Remove Python 3.7 version check from workflow

Removed check for Python 3.7 version from workflow.

Author: cclauss

.github/workflows/macOS_on_demand.yml

@@ -147,7 +147,6 @@ jobs:
           3.8
         allow-prereleases: true
     - run: |
-        python3.7 --version
         python3.8 --version
         python3.9 --version
         python3.10 --version