Remove Ranger for now

- We have a labeling bot that is marking issues as upstream (so far
  correctly) now Ranger is closing them right away and it felt too
  aggressive to me.
- It keeps posting its comment twice.  Not sure how to fix that.

.github/ranger.yml

@@ -1,29 +0,0 @@
-# Configuration for the repo ranger bot
-# See docs: https://www.notion.so/Documentation-8d7627bb1f3c42b7b1820e8d6f157a57#9879d1374fab4d1f9c607c230fd5123d
-default:
-  close:
-    # Default time to wait before closing the label. Can either be a number in milliseconds
-    # or a string specified by the `ms` package (https://www.npmjs.com/package/ms)
-    delay: "2 days"
-
-    # Default comment to post when an issue is first marked with a closing label
-    comment: "⚠️ This issue has been marked $LABEL and will be closed in $DELAY."
-
-labels:
-  duplicate: close
-  wontfix: close
-  "squash when passing": merge
-  "rebase when passing": merge
-  "merge when passing": merge
-  "new contributor":
-    action: comment
-    delay: 5s
-    message: "Thanks for making your first contribution! :slightly_smiling_face:"
-  "upstream:vscode":
-    action: close
-    delay: 5s
-    comment: >
-      This issue has been marked as 'upstream:vscode'.
-      Please file this upstream: [link to open issue](https://github.com/microsoft/vscode/issues/new/choose)
-
-      This issue will automatically close in $DELAY.