Remove PR auto labler (#1272)

Signed-off-by: Hung-Han (Henry) Chen <1474479+chenhunghan@users.noreply.github.com>

.github/labeler-config.yml

@@ -1,17 +0,0 @@
----
-area/ui:
-  - src/renderer/**/*
-area/test:
-  - integration/**/*
-  - __mocks__/**/*
-area/extension:
-  - extensions/**/*
-  - src/extensions/**/*
-area/documentation:
-  - README.md
-  - docs/**/*
-area/ci:
-  - .github/workflows/**/*
-  - .azure-pipelines.yml
-dependencies:
-  - yarn.lock

.github/workflows/labeler.yml

@@ -1,15 +0,0 @@
----
-name: "Pull Request Labeler"
-
-on:
-  - pull_request
-
-jobs:
-  triage:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/labeler@v2
-        if: github.repository == 'lensapp/lens'
-        with:
-          repo-token: "${{ secrets.GITHUB_TOKEN }}"
-          configuration-path: .github/labeler-config.yml