Remove use of ASDF within build

Not necessary, and adds complexity.

.github/workflows/build.yml

@@ -26,27 +26,13 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: ASDF setup
-        uses: asdf-vm/actions/setup@v2
-
-      - name: ASDF Cache
-        id: asdf-cache
-        uses: actions/cache@v3
+      - uses: actions/setup-java@v3
         with:
-          path: ${{ env.ASDF_DIR }}
-          key: ${{ runner.os }}-${{ hashFiles('**/.tool-versions') }}
-
-      - name: ASDF tool install
-        uses: asdf-vm/actions/install@v2
-        if: steps.asdf-cache.outputs.cache-hit != 'true'
-
-      - name: Set JAVA_HOME from ASDF
-        run: echo "JAVA_HOME=$(dirname $(dirname $(asdf which java)))" >> $GITHUB_ENV
+          distribution: temurin
+          java-version: 17
 
       - name: Gradle Build, Lint, Test
         uses: gradle/gradle-build-action@v2
-        env:
-          JAVA_HOME: ${{ env.JAVA_HOME }}
         with:
           arguments: build
           gradle-home-cache-cleanup: true