remove useless cache

Author: benjamin538

.github/workflows/build.yaml

@@ -32,12 +32,6 @@ jobs:
           java-version: '25'
           version: 'latest'
 
-      - name: cache
-        uses: actions/cache@v4
-        with:
-          path: \~/.m2/repository
-          key: \( {{ runner.os }}- \){{ matrix.suffix }}-maven-${{ hashFiles('**/pom.xml') }}
-
       - name: build w/ maven
         run: mvn package -Pnative