imports...
diff --git a/src/main/java/org/cloudera/htrace/impl/POJOSpanReceiver.java b/src/main/java/org/cloudera/htrace/impl/POJOSpanReceiver.java
index e5b96e2..79298cd 100644
--- a/src/main/java/org/cloudera/htrace/impl/POJOSpanReceiver.java
+++ b/src/main/java/org/cloudera/htrace/impl/POJOSpanReceiver.java
@@ -2,7 +2,6 @@
 
 import java.io.IOException;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.HashSet;
 
 import org.cloudera.htrace.Span;