Revert "Add markdown linting support" (#196)

This reverts commit 64a76273c1.

.github/workflows/markdownlint.yml

@@ -1,19 +0,0 @@
-name: 'Lint Markdown'
-on: 
-  pull_request:
-    types: [opened, edited, synchronize]
-
-jobs:
-  lint-markdown:
-    name: Lint changelog file
-    runs-on: ubuntu-latest
-    steps:
-    - name: Check out code
-      uses: actions/checkout@v2
-
-    - name: Lint markdown files
-      uses: docker://avtodev/markdown-lint:v1 # fastest way
-      with:
-        config: '/.markdownlint.yml'
-        args: '/**/*.md'
-        ignore: '_snippets' # multiple files must be separated with single space

.github/workflows/prune-stale-issues-prs.yml

@@ -10,6 +10,6 @@ jobs:
     - uses: actions/stale@v3
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-        stale-issue-message: 'This issue has gone mouldy, because it has been open 90 days with no activity. Remove stale label or comment or this will be closed in 30 days'
-        days-before-stale: 90
-        days-before-close: 30
+        stale-issue-message: 'This issue has gone mouldy, because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days'
+        days-before-stale: 30
+        days-before-close: 5