remove tests_pr as it executes twice

.woodpecker/tests.yml

@@ -6,16 +6,12 @@
 
 clone:
   git:
-    when:
-      event: [ push, tag, deployment ]
     image: woodpeckerci/plugin-git
 
 pipeline:
 
   # check shell scripts with shfmt
   test-shfmt:
-    when:
-      event: [ push, tag, deployment ]
     image: 'cr.44net.ch/drone-plugins/test'
     pull: true
     commands:
@@ -23,8 +19,6 @@ pipeline:
 
   # check python scripts with black
   test-black:
-    when:
-      event: [ push, tag, deployment ]
     image: 'cr.44net.ch/drone-plugins/test'
     pull: true
     commands:
@@ -32,8 +26,6 @@ pipeline:
 
   # test code and generate coverage report
   test-coverage-pytest:
-    when:
-      event: [ push, tag, deployment ]
     image: 'cr.44net.ch/drone-plugins/test'
     pull: true
     commands:
@@ -46,7 +38,6 @@ pipeline:
   sonarqube-analysis:
     when:
       branch: master
-      event: [ push, tag, deployment ]
     image: 'cr.44net.ch/drone-plugins/sonarqube'
     pull: true
     settings:

.woodpecker/tests_pr.yml

@@ -1,57 +0,0 @@
-##############################
-# code testing and analysis #
-#############################
-# branch: all
-# event: pull_request
-
-clone:
-  git:
-    when:
-      event: pull_request
-    image: woodpeckerci/plugin-git
-
-pipeline:
-
-  # check shell scripts with shfmt
-  test-shfmt:
-    when:
-      event: pull_request
-    image: 'cr.44net.ch/drone-plugins/test'
-    pull: true
-    commands:
-      - shfmt -d -i 4 -bn -ci -sr .
-
-  # check python scripts with black
-  test-black:
-    when:
-      event: pull_request
-    image: 'cr.44net.ch/drone-plugins/test'
-    pull: true
-    commands:
-      - black --check --diff --color .
-
-  # test code and generate coverage report
-  test-coverage-pytest:
-    when:
-      event: pull_request
-    image: 'cr.44net.ch/drone-plugins/test'
-    pull: true
-    commands:
-      - pip install -r requirements.txt
-      - coverage erase
-      - coverage run -m pytest --verbose --exitfirst
-      - coverage xml -i
-
-  # analyse code with sonarqube and upload it
-  sonarqube-analysis:
-    when:
-      branch: master
-      event: pull_request
-    image: 'cr.44net.ch/drone-plugins/sonarqube'
-    pull: true
-    settings:
-      sonar_host: 'https://sonarqube.44net.ch'
-      sonar_token:
-        from_secret: sq-44net-token
-      usingProperties: true
-