Remove wrong log.

src/main/java/com/criteo/gerrit/plugins/automerge/AutomaticMerger.java

diff --git a/src/main/java/com/criteo/gerrit/plugins/automerge/AutomaticMerger.java b/src/main/java/com/criteo/gerrit/plugins/automerge/AutomaticMerger.java
index 3c85a66..f7b51be 100644
--- a/src/main/java/com/criteo/gerrit/plugins/automerge/AutomaticMerger.java
+++ b/src/main/java/com/criteo/gerrit/plugins/automerge/AutomaticMerger.java
@@ -192,7 +192,6 @@
 
   private void processNewAtomicPatchSet(final ChangeAttribute change) {
     final int reviewNumber = Integer.parseInt(change.number);
-    log.info(String.format("Change on review %d is a topic change.", reviewNumber));
     try {
       api.changes().id(reviewNumber).get(EnumSet.of(ListChangesOption.CURRENT_REVISION));
     } catch (final RestApiException e1) {