Add the version to the statistics witness code upgrade;new contract is not packaged into block;

Yrp · Yrp · commit cb1fdf7635d1 · 2018-08-10T18:10:53.000+08:00
diff --git a/src/main/java/org/tron/common/utils/ForkController.java b/src/main/java/org/tron/common/utils/ForkController.java
@@ -1,7 +1,6 @@
 package org.tron.common.utils;
 
 import com.google.protobuf.ByteString;
-import java.util.Arrays;
 import java.util.List;
 import javax.annotation.PostConstruct;
 import lombok.Getter;
