Fix imports

Author: sureshanaparti

plugins/storage/image/swift/src/main/java/org/apache/cloudstack/storage/datastore/driver/SwiftImageStoreDriverImpl.java

@@ -39,7 +39,6 @@
 import org.apache.cloudstack.storage.image.BaseImageStoreDriverImpl;
 import org.apache.cloudstack.storage.image.store.ImageStoreImpl;
 import org.apache.cloudstack.storage.to.TemplateObjectTO;
-import org.apache.log4j.Logger;
 
 import com.cloud.agent.api.storage.DownloadAnswer;
 import com.cloud.agent.api.to.DataObjectType;