chore: remove Gitea CI workflow

.gitea/workflows/ci.yml

@@ -1,31 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
-  workflow_dispatch:
-
-jobs:
-  lint-and-compile:
-    # Prefer local Gitea runner labels to avoid pending/cancelled jobs.
-    runs-on: self-hosted
-    timeout-minutes: 15
-    steps:
-      - name: Show environment
-        run: |
-          pwd
-          ls -la
-          python3 --version
-
-      - name: Install dependencies
-        run: |
-          python3 -m pip install --upgrade pip
-          python3 -m pip install -r requirements.txt
-
-      - name: Compile Python files
-        run: |
-          python3 -m py_compile app/*.py