diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -3274,7 +3274,6 @@
     'PhabricatorEditorExtension' => 'applications/transactions/engineextension/PhabricatorEditorExtension.php',
     'PhabricatorEditorExtensionModule' => 'applications/transactions/engineextension/PhabricatorEditorExtensionModule.php',
     'PhabricatorEditorMailEngineExtension' => 'applications/transactions/engineextension/PhabricatorEditorMailEngineExtension.php',
-    'PhabricatorEditorMultipleSetting' => 'applications/settings/setting/PhabricatorEditorMultipleSetting.php',
     'PhabricatorEditorSetting' => 'applications/settings/setting/PhabricatorEditorSetting.php',
     'PhabricatorElasticFulltextStorageEngine' => 'applications/search/fulltextstorage/PhabricatorElasticFulltextStorageEngine.php',
     'PhabricatorElasticsearchHost' => 'infrastructure/cluster/search/PhabricatorElasticsearchHost.php',
@@ -9735,7 +9734,6 @@
     'PhabricatorEditorExtension' => 'Phobject',
     'PhabricatorEditorExtensionModule' => 'PhabricatorConfigModule',
     'PhabricatorEditorMailEngineExtension' => 'PhabricatorMailEngineExtension',
-    'PhabricatorEditorMultipleSetting' => 'PhabricatorSelectSetting',
     'PhabricatorEditorSetting' => 'PhabricatorStringSetting',
     'PhabricatorElasticFulltextStorageEngine' => 'PhabricatorFulltextStorageEngine',
     'PhabricatorElasticsearchHost' => 'PhabricatorSearchHost',
diff --git a/src/applications/people/storage/PhabricatorUser.php b/src/applications/people/storage/PhabricatorUser.php
--- a/src/applications/people/storage/PhabricatorUser.php
+++ b/src/applications/people/storage/PhabricatorUser.php
@@ -478,19 +478,6 @@
 
     $editor = $this->getUserSetting(PhabricatorEditorSetting::SETTINGKEY);
 
-    if (is_array($path)) {
-      $multi_key = PhabricatorEditorMultipleSetting::SETTINGKEY;
-      $multiedit = $this->getUserSetting($multi_key);
-      switch ($multiedit) {
-        case PhabricatorEditorMultipleSetting::VALUE_SPACES:
-          $path = implode(' ', $path);
-          break;
-        case PhabricatorEditorMultipleSetting::VALUE_SINGLE:
-        default:
-          return null;
-      }
-    }
-
     if (!strlen($editor)) {
       return null;
     }
diff --git a/src/applications/settings/setting/PhabricatorEditorMultipleSetting.php b/src/applications/settings/setting/PhabricatorEditorMultipleSetting.php
deleted file mode 100644
--- a/src/applications/settings/setting/PhabricatorEditorMultipleSetting.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-final class PhabricatorEditorMultipleSetting
-  extends PhabricatorSelectSetting {
-
-  const SETTINGKEY = 'multiedit';
-
-  const VALUE_SPACES = 'spaces';
-  const VALUE_SINGLE = 'disable';
-
-  public function getSettingName() {
-    return pht('Edit Multiple Files');
-  }
-
-  public function getSettingPanelKey() {
-    return PhabricatorExternalEditorSettingsPanel::PANELKEY;
-  }
-
-  protected function getSettingOrder() {
-    return 400;
-  }
-
-  protected function getControlInstructions() {
-    return pht(
-      'Some editors support opening multiple files with a single URI. You '.
-      'can specify the behavior of your editor here.');
-  }
-
-  public function getSettingDefaultValue() {
-    return self::VALUE_SPACES;
-  }
-
-  protected function getSelectOptions() {
-    return array(
-      self::VALUE_SPACES => pht('Supported, Separated by Spaces'),
-      self::VALUE_SINGLE => pht('Not Supported'),
-    );
-  }
-
-}