Removed restriction annotation which is not needed with open JDK

src/test/java/org/gcube/informationsystem/resourceregistry/publisher/SmartgearResourcesTest.java

@@ -261,7 +261,6 @@ public class SmartgearResourcesTest extends ContextTest {
 		return memoryFacet;
 	}
 	
-	@SuppressWarnings("restriction")
 	private MemoryFacet getRamInfo(MemoryFacet memoryFacet) {
 		if(memoryFacet == null){
 			memoryFacet = new MemoryFacetImpl();