Delete test policy (#46466)

Author: gewarren

.github/policies/disallow-edits.yml

@@ -60,30 +60,3 @@ configuration:
                       permission: Read
             then:
               - closePullRequest
-
-      - description: (This is only a test policy that will be deleted.) Disallow sign-off for articles in the /docs/csharp folder.
-        if:
-          - or:
-            - payloadType: Issue_Comment
-            - payloadType: Pull_Request_Review_Comment
-          - isAction:
-              action: Created
-          - isActivitySender:
-              issueAuthor: True
-          - commentContains:
-              pattern: '#sign-off'
-              isRegex: False
-          - isAssignedToUser:
-              user: BillWagner
-          - not:
-              isActivitySender:
-                user: BillWagner
-        then:
-          # Add the do-not-merge label, remove the ready-to-merge label, and add a reply asking the PR author not to sign off on the PR.
-          - addReply:
-              reply: >-
-                @${issueAuthor} - Please do NOT sign off on this pull request!!
-          - addLabel:
-              label: do-not-merge
-          - removeLabel:
-              label: ready-to-merge