Remove outdated Chinese SQL table alter redirects

Removed obsolete Chinese redirects for alter table commands.

Author: Chasen-Zhang

site-redirects.ts

@@ -44,26 +44,6 @@ const siteRedirects = [
     from: '/sql/sql-commands/ddl/table/alter-table-swap',
     to: '/sql/sql-commands/ddl/table/alter-table'
   },
-  {
-    from: '/cn/sql/sql-commands/ddl/table/alter-table-column',
-    to: '/cn/sql/sql-commands/ddl/table/alter-table'
-  },
-  {
-    from: '/cn/sql/sql-commands/ddl/table/alter-table-comment',
-    to: '/cn/sql/sql-commands/ddl/table/alter-table'
-  },
-  {
-    from: '/cn/sql/sql-commands/ddl/table/alter-table-option',
-    to: '/cn/sql/sql-commands/ddl/table/alter-table'
-  },
-  {
-    from: '/cn/sql/sql-commands/ddl/table/alter-table-connection',
-    to: '/cn/sql/sql-commands/ddl/table/alter-table'
-  },
-  {
-    from: '/cn/sql/sql-commands/ddl/table/alter-table-swap',
-    to: '/cn/sql/sql-commands/ddl/table/alter-table'
-  },
   // AI Functions redirects - functions moved to external implementation
   {
     from: '/sql/sql-functions/ai-functions/ai-cosine-distance',