Remove unused public method.

Remove import that was only there for a doc string.

Change-Id: I28dba8fabe19245583b1ae36065fb85cc9b8a6a3
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/permissions/PermissionBackendException.java b/gerrit-server/src/main/java/com/google/gerrit/server/permissions/PermissionBackendException.java
index be02a6f..3634a45 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/permissions/PermissionBackendException.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/permissions/PermissionBackendException.java
@@ -15,13 +15,12 @@
 package com.google.gerrit.server.permissions;
 
 import com.google.gerrit.common.Nullable;
-import com.google.gerrit.server.account.GroupBackend;
 
 /**
  * Thrown when {@link PermissionBackend} cannot compute the result.
  *
- * <p>This is typically a transient failure, such as a required {@link GroupBackend} not responding
- * to membership requests.
+ * <p>This is typically a transient failure, such as a required group backend not responding to
+ * membership requests.
  */
 public class PermissionBackendException extends Exception {
   private static final long serialVersionUID = 1L;
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/util/LabelVote.java b/gerrit-server/src/main/java/com/google/gerrit/server/util/LabelVote.java
index 538d7d1..b5e180df 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/util/LabelVote.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/util/LabelVote.java
@@ -19,7 +19,6 @@
 import com.google.auto.value.AutoValue;
 import com.google.common.base.Strings;
 import com.google.gerrit.common.data.LabelType;
-import com.google.gerrit.reviewdb.client.PatchSetApproval;
 
 /** A single vote on a label, consisting of a label name and a value. */
 @AutoValue
@@ -69,10 +68,6 @@
     return new AutoValue_LabelVote(LabelType.checkNameInternal(label), value);
   }
 
-  public static LabelVote create(PatchSetApproval psa) {
-    return create(psa.getLabel(), psa.getValue());
-  }
-
   public abstract String label();
 
   public abstract short value();