Adapt to changes in gerrit core

After change Ia557409f

Change-Id: I120afe184749cce4439af2b8f5fd6e353fd1392b
diff --git a/java/com/google/gerrit/plugins/checks/email/CombinedCheckStateUpdatedSender.java b/java/com/google/gerrit/plugins/checks/email/CombinedCheckStateUpdatedSender.java
index d8f4e73..4fb9beb 100644
--- a/java/com/google/gerrit/plugins/checks/email/CombinedCheckStateUpdatedSender.java
+++ b/java/com/google/gerrit/plugins/checks/email/CombinedCheckStateUpdatedSender.java
@@ -64,7 +64,6 @@
     ccAllApprovals();
     bccStarredBy();
     includeWatchers(NotifyType.ALL_COMMENTS);
-    removeUsersThatIgnoredTheChange();
   }
 
   public void setCombinedCheckState(
diff --git a/javatests/com/google/gerrit/plugins/checks/acceptance/api/ChecksEmailIT.java b/javatests/com/google/gerrit/plugins/checks/acceptance/api/ChecksEmailIT.java
index bfb3435..081c2bc 100644
--- a/javatests/com/google/gerrit/plugins/checks/acceptance/api/ChecksEmailIT.java
+++ b/javatests/com/google/gerrit/plugins/checks/acceptance/api/ChecksEmailIT.java
@@ -69,7 +69,6 @@
 
   private TestAccount bot;
   private TestAccount owner;
-  private TestAccount ignoringReviewer;
   private TestAccount reviewer;
   private TestAccount starrer;
   private TestAccount watcher;
@@ -127,13 +126,6 @@
     projectWatchInfo.notifyNewChanges = true;
     gApi.accounts().self().setWatchedProjects(ImmutableList.of(projectWatchInfo));
 
-    // Add a reviewer that ignores the change --> user doesn't get notified by checks plugin.
-    ignoringReviewer = accountCreator.create("ignorer", "ignorer@example.com", "Ignorer", null);
-    requestScopeOperations.setApiUser(admin.id());
-    gApi.changes().id(patchSetId.changeId().get()).addReviewer(ignoringReviewer.username());
-    requestScopeOperations.setApiUser(ignoringReviewer.id());
-    gApi.changes().id(patchSetId.changeId().get()).ignore(true);
-
     // Reset request scope to admin.
     requestScopeOperations.setApiUser(admin.id());
   }