svm: remove unused imports

Author: zapster

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/RecomputedFields.java

@@ -33,10 +33,8 @@
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.nio.charset.CharsetDecoder;
-import java.security.AccessControlContext;
 import java.util.concurrent.ForkJoinPool;
 
-import com.oracle.svm.core.annotate.TargetElement;
 import org.graalvm.nativeimage.ImageSingletons;
 import org.graalvm.nativeimage.Platforms;
 import org.graalvm.nativeimage.impl.InternalPlatform;