Remove activation

Author: irm-codebase

.github/workflows/template-check-version.yml

@@ -27,9 +27,6 @@ jobs:
           post-cleanup: all
           cache-environment: true
 
-      - name: Activate mamba environment
-        run: mamba activate ${{ github.event.repository.name }}-copier
-
       - name: Add dummy GitHub credentials
         run: |
           git config --global user.name Copier update