Delete build.yml

.github/workflows/build.yml

@@ -1,12 +0,0 @@
-name: Build
-on: [push]
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
-        with:
-          java-version: 1.8
-      - name: Build
-        run: ./gradlew build