remove legacy workflow

.github/workflows/build.yml

@@ -1,27 +0,0 @@
-# This workflow will build a package using Maven and then publish it to GitHub packages when a release is created
-# For more information see: https://github.com/actions/setup-java/blob/main/docs/advanced-usage.md#apache-maven-with-a-settings-path
-
-name: Build TerminatorPlus
-
-on: [push, pull_request]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 16
-      uses: actions/setup-java@v2
-      with:
-        java-version: '16'
-        distribution: 'adopt'
-        server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
-        settings-path: ${{ github.workspace }} # location for the settings.xml file
-
-    - name: Build with Maven
-      run: mvn -B package --file pom.xml