Remove empty line

Change-Id: I9e2913bd11f957878ff98d0148997cd882d97072
diff --git a/ui/src/common/event_set.ts b/ui/src/common/event_set.ts
index 87e62d5..3971fd8 100644
--- a/ui/src/common/event_set.ts
+++ b/ui/src/common/event_set.ts
@@ -43,7 +43,6 @@
 export interface EmptyKeySet extends KeySet {
   readonly id: typeof IdType;
 }
-;
 
 // A particular key/value pair on an Event matches the relevant entry
 // on the KeySet if the KeyType and the value type 'match':