chore: remove GitHub Actions workflows for linting backend, frontend, and documentation

.gitea/workflows/lint-backend.yml

@@ -1,25 +0,0 @@
-name: Backend Lint
-on:
-  push:
-    paths:
-      - 'backend/**'
-  pull_request:
-    paths:
-      - 'backend/**'
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v4
-        with:
-          version: 9
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-          cache: 'pnpm'
-      - name: Install dependencies
-        run: pnpm install
-      - name: Run lint
-        run: pnpm -F @memegoat/backend lint

.gitea/workflows/lint-documentation.yml

@@ -1,25 +0,0 @@
-name: Documentation Lint
-on:
-  push:
-    paths:
-      - 'documentation/**'
-  pull_request:
-    paths:
-      - 'documentation/**'
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v4
-        with:
-          version: 9
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-          cache: 'pnpm'
-      - name: Install dependencies
-        run: pnpm install
-      - name: Run lint
-        run: pnpm -F @memegoat/documentation lint

.gitea/workflows/lint-frontend.yml

@@ -1,25 +0,0 @@
-name: Frontend Lint
-on:
-  push:
-    paths:
-      - 'frontend/**'
-  pull_request:
-    paths:
-      - 'frontend/**'
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v4
-        with:
-          version: 9
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-          cache: 'pnpm'
-      - name: Install dependencies
-        run: pnpm install
-      - name: Run lint
-        run: pnpm -F @memegoat/frontend lint