ChangeRebuilder: Remove unused GitRepositoryManager

Change-Id: I140005adef6260f08e219b9959725f0d958b3e44
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeRebuilder.java b/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeRebuilder.java
index 861188c..c4a7c07 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeRebuilder.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/notedb/ChangeRebuilder.java
@@ -54,7 +54,6 @@
 
   private final PersonIdent serverIdent;
   private final Provider<ReviewDb> dbProvider;
-  private final GitRepositoryManager repoManager;
   private final ChangeControl.GenericFactory controlFactory;
   private final IdentifiedUser.GenericFactory userFactory;
   private final ChangeUpdate.Factory updateFactory;
@@ -68,7 +67,6 @@
       ChangeUpdate.Factory updateFactory) {
     this.serverIdent = serverIdent;
     this.dbProvider = dbProvider;
-    this.repoManager = repoManager;
     this.controlFactory = controlFactory;
     this.userFactory = userFactory;
     this.updateFactory = updateFactory;