Remove closed issue/pr auto lock workflow [skip ci]

(cherry picked from commit f33aa1ac9223393d0921df2902e4b59589ab7d2d)

# Conflicts:
#	.github/workflows/lock.yml

.github/workflows/lock.yml

@@ -1,19 +0,0 @@
-name: Lock threads
-
-on:
-  # Daily
-  schedule:
-    - cron: '0 0 * * *'
-  # Manual trigger
-  workflow_dispatch:
-    inputs:
-
-jobs:
-  lock:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: dessant/lock-threads@v5
-        with:
-          github-token: ${{ github.token }}
-          issue-inactive-days: '2'
-          pr-inactive-days: '2'