Remove workflow, leaving schema.json and apps.json

Signed-off-by: Kingthorin <kingthorin@users.noreply.github.com>

.github/workflows/schema-check.yml

@@ -1,27 +0,0 @@
-name: JSON Schema Check
-
-on:
-  pull_request:
-    branches:
-    - master
-    paths:
-    - 'src/apps.json'
-    - 'schema.json'
-
-jobs:
-  schema-check:
-    runs-on: ubuntu-latest
-    env:
-      CI: true
-    steps:
-    - name: Setup Action
-      uses: actions/checkout@v2
-    - name: Setup Node
-      uses: actions/setup-node@v1
-      with:
-        node-version: 13.x
-    - name: Install dependencies
-      run: npm install -g ajv-cli
-    - name: Run schema check
-      run: |
-        ajv validate -s schema.json -d src/apps.json --all-errors --error-data-path=property