Remove the inherited auto-approve and auto-merge bots (#77)

Both came with the upstream template: a pull request labelled '-auto' was
approved for an upstream maintainer's account and squash-merged once its
checks reported, through the upstream author's own actions. The label does
not exist here and neither workflow ever acted (2 runs each, both on other
labels), but the path was open: it merges without review, and the PR checks
it waited on run with continue-on-error.

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.github/workflows/auto-approve.yml

@@ -1,17 +0,0 @@
-name: bot
-
-on:
-  pull_request:
-    types: [labeled]
-
-jobs:
-  approve:
-    if: "! startsWith(github.event.head_commit.message, '[CI Skip]') && (!github.event.pull_request || github.event.pull_request.head.repo.full_name == github.repository)"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: jacogr/action-approve@795afd1dd096a2071d7ec98740661af4e853b7da
-        with:
-          # NOTE: Add your maintainer GitHub usernames here
-          authors: mamostehp
-          labels: -auto
-          token: ${{ github.token }}

.github/workflows/auto-merge.yml

@@ -1,16 +0,0 @@
-name: bot
-
-on:
-  pull_request:
-    types: [labeled]
-
-jobs:
-  merge:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: jacogr/action-merge@d2d64b4545acd93b0a9575177d3d215ae3f92029
-        with:
-          checks: pr (build:code),pr (build:i18n),pr (lint),pr (test)
-          labels: -auto
-          strategy: squash
-          token: ${{ github.token }}