Thanks: Special page aliases should not store in zh

Bug: T286291
Change-Id: I2c2c78eda1a9382df46ee95381a43188928be90d

Thanks.alias.php

@@ -168,11 +168,6 @@ $specialPageAliases['vi'] = [
 	'Thanks' => [ 'Cảm_ơn', 'Cám_ơn' ],
 ];
 
-/** Chinese (中文) */
-$specialPageAliases['zh'] = [
-	'Thanks' => [ '感谢', '感謝' ],
-];
-
 /** Simplified Chinese (中文（简体）) */
 $specialPageAliases['zh-hans'] = [
 	'Thanks' => [ '感谢' ],