remove coverage

.github/workflows/ci_unidock.yml

@@ -1,7 +1,7 @@
 name: Uni-Dock CI/CD
 on:
   push:
-    branches: [ fix_unidock_ut ]
+    branches: []
   pull_request:
     branches: [ main ]
 
@@ -50,9 +50,8 @@ jobs:
     - name: perform unit-test
       run: |
         python -m pip install --upgrade pip
-        pip install pytest coverage
-        coverage run -m pytest unidock/test/ut -v
-        coverage xml
+        pip install pytest
+        pytest unidock/test/ut -v
 
   build_docker_image:
     needs: unidock_test