Remove StubUserLang::findVariantLink

Was hard-deprecated together with Language counterpart.
Was forgotten to be removed when the method was removed
from Language class. No need for release notes, StubUserLang
is an internal concept.

Change-Id: Iec233869143ed273642f444c39387c053a33bc9d

includes/StubUserLang.php

@@ -18,8 +18,6 @@
  * @file
  */
 
-use MediaWiki\MediaWikiServices;
-
 /**
  * Stub object for the user language. Assigned to the $wgLang global.
  */
@@ -29,29 +27,6 @@ class StubUserLang extends StubObject {
 		parent::__construct( 'wgLang' );
 	}
 
-	/**
-	 * Call Language::findVariantLink after unstubbing $wgLang.
-	 *
-	 * This method is implemented with a full signature rather than relying on
-	 * __call so that the pass-by-reference signature of the proxied method is
-	 * honored.
-	 * @deprecated since 1.35
-	 *
-	 * @param string &$link The name of the link
-	 * @param Title &$nt The title object of the link
-	 * @param bool $ignoreOtherCond To disable other conditions when
-	 *   we need to transclude a template or update a category's link
-	 */
-	public function findVariantLink( &$link, &$nt, $ignoreOtherCond = false ) {
-		global $wgLang;
-		wfDeprecated( __METHOD__, '1.35' );
-		$this->_unstub( 'findVariantLink', 3 );
-		MediaWikiServices::getInstance()
-			->getLanguageConverterFactory()
-			->getLanguageConverter( $wgLang )
-			->findVariantLink( $link, $nt, $ignoreOtherCond );
-	}
-
 	/**
 	 * @return Language
 	 */