Fix styles

Author: Yauhenikapl

core/esmf-aspect-meta-model-java/src/test/java/org/eclipse/esmf/aspectmodel/resolver/AspectModelResolverTest.java

@@ -19,10 +19,7 @@
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
 import java.io.File;
-import java.io.InputStream;
-import java.net.URI;
 import java.net.URISyntaxException;
-import java.util.Optional;
 
 import org.eclipse.esmf.aspectmodel.AspectLoadingException;
 import org.eclipse.esmf.aspectmodel.loader.AspectModelLoader;
@@ -32,7 +29,6 @@
 import org.eclipse.esmf.metamodel.vocabulary.SammNs;
 import org.eclipse.esmf.samm.KnownVersion;
 import org.eclipse.esmf.test.InvalidTestAspect;
-import org.eclipse.esmf.test.TestAspect;
 import org.eclipse.esmf.test.TestModel;
 import org.eclipse.esmf.test.TestResources;