Remove unused import in BranchOrderSection

Change-Id: I59b3f8b53f6f26321d097c52d1d1220a238c8fbc

gerrit-server/src/main/java/com/google/gerrit/server/git/BranchOrderSection.java

diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/BranchOrderSection.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/BranchOrderSection.java
index 29305ad..f9844d5 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/BranchOrderSection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/BranchOrderSection.java
@@ -18,8 +18,6 @@
 
 import com.google.common.collect.ImmutableList;
 
-import org.eclipse.jgit.lib.Constants;
-
 import java.util.List;
 
 public class BranchOrderSection {