ci: remove check-size action

deprecated

Author: apertureless

.github/workflows/checks.yml

@@ -4,21 +4,6 @@ on:
     branches:
       - main
 jobs:
-  size:
-    runs-on: ubuntu-latest
-    name: Checking size
-    steps:
-      - name: Checkout the repository
-        uses: actions/checkout@v4
-      - name: Install pnpm
-        uses: pnpm/action-setup@v2
-        with:
-          version: 8
-      - name: Install Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: 16
-          cache: 'pnpm'
   typings:
     runs-on: ubuntu-latest
     name: typings