Update XmlFactoryBuilder.java

Author: pjfanning

src/main/java/tools/jackson/dataformat/xml/XmlFactoryBuilder.java

@@ -6,7 +6,6 @@
 
 import tools.jackson.core.ErrorReportConfiguration;
 import tools.jackson.core.StreamReadConstraints;
-import tools.jackson.core.StreamReadFeature;
 import tools.jackson.core.StreamWriteConstraints;
 import tools.jackson.core.base.DecorableTSFactory.DecorableTSFBuilder;