remove github workflow

.github/workflows/build.yml

@@ -1,40 +0,0 @@
-# This workflow will build a Java project with Gradle
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
-
-name: Java CI with Gradle
-
-on:
-  push:
-    tags:
-      - "v*" # Push events to matching v*, i.e. v1.0, v20.15.10
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    
-    steps:
-      - uses: actions/checkout@v2
-      
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
-        with:
-          java-version: 1.8
-      
-      - name: Build Terra
-        run: gradle shadowJar
-      
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: Package
-          path: build/libs
-      
-      - name: Publish release
-        uses: marvinpinto/action-automatic-releases@latest
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          prerelease: false
-          files: |
-            build/libs/Terra-*.jar
-            LICENSE
-