ProjectResetter: Replace trivial usage of deprecated Repository.getAllRefs

Change-Id: I19e44aff7c5c1df2929622ed17f05c62064b4db2
diff --git a/java/com/google/gerrit/acceptance/ProjectResetter.java b/java/com/google/gerrit/acceptance/ProjectResetter.java
index 1fed8f8..76ae4b0 100644
--- a/java/com/google/gerrit/acceptance/ProjectResetter.java
+++ b/java/com/google/gerrit/acceptance/ProjectResetter.java
@@ -214,7 +214,7 @@
     for (Map.Entry<Project.NameKey, Collection<String>> e :
         refsPatternByProject.asMap().entrySet()) {
       try (Repository repo = repoManager.openRepository(e.getKey())) {
-        Collection<Ref> refs = repo.getAllRefs().values();
+        Collection<Ref> refs = repo.getRefDatabase().getRefs();
         for (String refPattern : e.getValue()) {
           RefPatternMatcher matcher = RefPatternMatcher.getMatcher(refPattern);
           for (Ref ref : refs) {