diff --git a/includes/Hooks.php b/includes/Hooks.php
index 71b80edab..1280e4953 100644
--- a/includes/Hooks.php
+++ b/includes/Hooks.php
@@ -723,25 +723,6 @@ class Hooks {
 					Constants::CONFIG_KEY_DISABLE_SIDEBAR_PERSISTENCE
 				);
 		}
-
-		// [[phab:T297758]] ensure old Vector is the same as new Vector
-		// from a user script / gadget point of view.
-		if ( self::isSkinVersionLegacy( $skinName ) ) {
-			$vars[ 'skin' ] = 'vector';
-		}
-	}
-
-	/**
-	 * @param array &$vars Array of variables to be added into the output.
-	 * @param string $skin
-	 * @param Config $config
-	 */
-	public static function onResourceLoaderGetConfigVars( array &$vars, string $skin, Config $config ) {
-			// [[phab:T297758]] ensure old Vector is the same as new Vector
-		// from a user script / gadget point of view.
-		if ( self::isVectorSkin( $skin ) ) {
-			$vars['skin'] = 'vector';
-		}
 	}
 
 	/**
diff --git a/skin.json b/skin.json
index 3f0b2db61..3bb7fb418 100644
--- a/skin.json
+++ b/skin.json
@@ -115,7 +115,6 @@
 		"vector": "GlobalVarConfig::newInstance"
 	},
 	"Hooks": {
-		"ResourceLoaderGetConfigVars": "Vector\\Hooks::onResourceLoaderGetConfigVars",
 		"ResourceLoaderSiteModulePages": "Vector\\Hooks::onResourceLoaderSiteModulePages",
 		"ResourceLoaderSiteStylesModulePages": "Vector\\Hooks::onResourceLoaderSiteStylesModulePages",
 		"SkinPageReadyConfig": "Vector\\Hooks::onSkinPageReadyConfig",