diff --git a/.github/workflows/azure-pipelines-18.yml b/.github/workflows/azure-pipelines-18.yml
deleted file mode 100644
index eb089010..00000000
--- a/.github/workflows/azure-pipelines-18.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-# Python Django
-# Test a Django project on multiple versions of Python.
-# Add steps that analyze code, save build artifacts, deploy, and more:
-# https://docs.microsoft.com/azure/devops/pipelines/languages/python
-
-trigger:
-- main
-
-pool:
-  vmImage: ubuntu-latest
-strategy:
-  matrix:
-    Python35:
-      PYTHON_VERSION: '3.5'
-    Python36:
-      PYTHON_VERSION: '3.6'
-    Python37:
-      PYTHON_VERSION: '3.7'
-  maxParallel: 3
-
-steps:
-- task: UsePythonVersion@0
-  inputs:
-    versionSpec: '$(PYTHON_VERSION)'
-    architecture: 'x64'
-
-- task: PythonScript@0
-  displayName: 'Export project path'
-  inputs:
-    scriptSource: 'inline'
-    script: |
-      """Search all subdirectories for `manage.py`."""
-      from glob import iglob
-      from os import path
-      # Python >= 3.5
-      manage_py = next(iglob(path.join('**', 'manage.py'), recursive=True), None)
-      if not manage_py:
-          raise SystemExit('Could not find a Django project')
-      project_location = path.dirname(path.abspath(manage_py))
-      print('Found Django project in', project_location)
-      print('##vso[task.setvariable variable=projectRoot]{}'.format(project_location))
-
-- script: |
-    python -m pip install --upgrade pip setuptools wheel
-    pip install -r requirements.txt
-    pip install unittest-xml-reporting
-  displayName: 'Install prerequisites'
-
-- script: |
-    pushd '$(projectRoot)'
-    python manage.py test --testrunner xmlrunner.extra.djangotestrunner.XMLTestRunner --no-input
-  displayName: 'Run tests'
-
-- task: PublishTestResults@2
-  inputs:
-    testResultsFiles: "**/TEST-*.xml"
-    testRunTitle: 'Python $(PYTHON_VERSION)'
-  condition: succeededOrFailed()