Delete old stalebot

.github/stale.yml

-# Configuration for probot-stale - https://github.com/probot/stale
-
-# Number of days of inactivity before an Issue or Pull Request becomes stale
-daysUntilStale: 180
-
-# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
-# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
-daysUntilClose: 14
-
-# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
-onlyLabels: []
-
-# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
-exemptLabels:
-  - internal
-  - kind/bug
-  - kind/bug-qa
-  - kind/task
-  - kind/feature
-  - kind/enhancement
-  - kind/design
-  - kind/ci-improvements
-  - kind/performance
-  - kind/flaky-test
-  - kind/documentation
-  - kind/backport
-  - priority/backlog
-  - priority/critical-urgent
-  - priority/important-longterm
-  - priority/important-soon
-
-# Set to true to ignore issues in a project (defaults to false)
-exemptProjects: true
-
-# Set to true to ignore issues in a milestone (defaults to false)
-exemptMilestones: false
-
-# Set to true to ignore issues with an assignee (defaults to false)
-exemptAssignees: true
-
-# Label to use when marking as stale
-staleLabel: status/stale
-
-# Comment to post when marking as stale. Set to `false` to disable
-markComment: >
-  This repository uses a bot to automatically label issues which have not had any activity (commit/comment/label) 
-  for 180 days. This helps us manage the community issues better. If the issue is still relevant, please add a comment to the 
-  issue so the bot can remove the label and we know it is still valid. If it is no longer relevant (or possibly fixed in the 
-  latest release), the bot will automatically close the issue in 14 days. Thank you for your contributions.
-
-# Limit the number of actions per hour, from 1-30. Default is 30
-limitPerRun: 30
-
-# Limit to only `issues`
-only: issues