Simplify TornadoVM build command

Author: mikepapadim

.github/workflows/build-and-run.yml

@@ -49,7 +49,7 @@ jobs:
         run: |
           cd GPULlama3.java/external/tornadovm
           source venv/bin/activate
-          make graal-jdk-21
+          make
           # Verify TornadoVM
           tornado --devices