diff --git a/java/com/google/gerrit/server/account/AccountManager.java b/java/com/google/gerrit/server/account/AccountManager.java
index 7fb9997..09757eb 100644
--- a/java/com/google/gerrit/server/account/AccountManager.java
+++ b/java/com/google/gerrit/server/account/AccountManager.java
@@ -15,6 +15,7 @@
 package com.google.gerrit.server.account;
 
 import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.collect.ImmutableSet.toImmutableSet;
 import static com.google.gerrit.server.account.externalids.ExternalId.SCHEME_USERNAME;
 
 import com.google.common.base.Strings;
@@ -448,8 +449,10 @@
             "Delete External IDs on Update Link",
             to,
             (a, u) -> {
-              Collection<ExternalId> filteredExtIdsByScheme =
-                  a.getExternalIds(who.getExternalIdKey().scheme());
+              Set<ExternalId> filteredExtIdsByScheme =
+                  a.getExternalIds().stream()
+                      .filter(e -> e.key().isScheme(who.getExternalIdKey().scheme()))
+                      .collect(toImmutableSet());
               if (filteredExtIdsByScheme.isEmpty()) {
                 return;
               }
diff --git a/java/com/google/gerrit/server/account/AccountState.java b/java/com/google/gerrit/server/account/AccountState.java
index 4a04f01..debb2be 100644
--- a/java/com/google/gerrit/server/account/AccountState.java
+++ b/java/com/google/gerrit/server/account/AccountState.java
@@ -14,7 +14,6 @@
 
 package com.google.gerrit.server.account;
 
-import static com.google.common.collect.ImmutableSet.toImmutableSet;
 import static com.google.gerrit.server.account.externalids.ExternalId.SCHEME_USERNAME;
 
 import com.google.common.base.MoreObjects;
@@ -209,11 +208,6 @@
     return externalIds;
   }
 
-  /** The external identities that identify the account holder that match the given scheme. */
-  public ImmutableSet<ExternalId> getExternalIds(String scheme) {
-    return externalIds.stream().filter(e -> e.key().isScheme(scheme)).collect(toImmutableSet());
-  }
-
   /** The project watches of the account. */
   public ImmutableMap<ProjectWatchKey, ImmutableSet<NotifyType>> getProjectWatches() {
     return projectWatches;