Removed unused import.

Author: gmessner

src/main/java/org/gitlab4j/api/utils/JacksonJson.java

@@ -12,7 +12,6 @@
 import java.util.TimeZone;
 
 import javax.ws.rs.Produces;
-import javax.ws.rs.core.GenericType;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.ext.ContextResolver;
 import javax.ws.rs.ext.Provider;