ci: remove "labeler" job in release-0.5 branch #15804

Its config and labels are out of date and we don't need it on the
release-0.5. branch anyway.

.github/labeler.yml

@@ -1,49 +0,0 @@
-"lsp":
-  - runtime/lua/vim/lsp.lua
-  - runtime/lua/vim/lsp/*
-
-"lua":
-  - runtime/lua/**/*
-  - src/nvim/lua
-
-"tui":
-  - src/nvim/tui/tui.*
-
-"treesitter":
-  - src/nvim/lua/treesitter.*
-  - runtime/lua/vim/treesitter.lua
-  - runtime/lua/vim/treesitter/*
-
-"dependencies":
-  - third-party/**/*
-
-"topic: spell":
-  - src/nvim/spell*
-
-"topic: :terminal":
-  - src/nvim/terminal.*
-
-"topic: column":
-  - src/nvim/mark.h
-  - src/nvim/mark.c
-  - src/nvim/sign*
-
-"topic: folds":
-  - src/nvim/fold*
-
-"topic: mouse":
-  - src/nvim/mouse*
-
-"topic: documentation":
-  - runtime/doc/*
-
-"topic: clipboard":
-  - runtime/autoload/provider/clipboard.vim
-
-"topic: diff":
-  - src/nvim/diff.*
-
-"topic: build":
-  - CMakeLists.txt
-  - "**/CMakeLists.txt"
-  - "**/*.cmake"

.github/workflows/labeler.yml

@@ -1,13 +0,0 @@
-name: "Pull Request Labeler"
-on:
-- pull_request_target
-jobs:
-  triage:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      pull-requests: write
-    steps:
-    - uses: actions/labeler@main
-      with:
-        repo-token: "${{ secrets.GITHUB_TOKEN }}"