remove github bits, again

.github/workflows/check-spdx-license-id.yml

@@ -1,75 +0,0 @@
-name: Check SPDX-License-Identifier
-
-on:
-  push:
-    branches:
-      - master
-      - develop
-  pull_request:
-
-jobs:
-  check-spdx-license-id:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4.1.1
-      - name: Check
-        run: |
-          counter=0
-
-          search() {
-            local directory="$1"
-            find "$directory" -type f \
-              '(' \
-                -name "*.cjs" -and -not -name '*.config.cjs' -o \
-                -name "*.html" -o \
-                -name "*.js" -and -not -name '*.config.js' -o \
-                -name "*.mjs" -and -not -name '*.config.mjs' -o \
-                -name "*.scss" -o \
-                -name "*.ts" -and -not -name '*.config.ts' -o \
-                -name "*.vue" \
-              ')' -and \
-              -not -name '*eslint*'
-          }
-
-          check() {
-            local file="$1"
-            if ! (
-              grep -q "SPDX-FileCopyrightText: syuilo and misskey-project" "$file" ||
-              grep -q "SPDX-License-Identifier: AGPL-3.0-only" "$file"
-            ); then
-              echo "Missing: $file"
-              ((counter++))
-            fi
-          }
-
-          directories=(
-            "cypress/e2e"
-            "packages/backend/migration"
-            "packages/backend/src"
-            "packages/backend/test"
-            "packages/frontend/.storybook"
-            "packages/frontend/@types"
-            "packages/frontend/lib"
-            "packages/frontend/public"
-            "packages/frontend/src"
-            "packages/frontend/test"
-            "packages/misskey-bubble-game/src"
-            "packages/misskey-reversi/src"
-            "packages/sw/src"
-            "scripts"
-          )
-
-          for directory in "${directories[@]}"; do
-            for file in $(search $directory); do
-              check "$file"
-            done
-          done
-
-          if [ $counter -gt 0 ]; then
-            echo "SPDX-License-Identifier is missing in $counter files."
-            exit 1
-          else
-            echo "SPDX-License-Identifier is certainly described in all target files!"
-            exit 0
-          fi