move other features to under introduction

Author: Blargian

sidebars.js

@@ -492,6 +492,16 @@ const sidebars = {
             },
           ],
         },
+        {
+          type: "category",
+          label: "Operators",
+          items: [
+            {
+              type: "autogenerated",
+              dirName: "sql-reference/operators",
+            },
+          ]
+        },
       ],
     },
     {
@@ -568,33 +578,6 @@ const sidebars = {
         },
       ],
     },
-    {
-      type: "category",
-      label: "Other Features",
-      collapsed: false,
-      collapsible: false,
-      items: [
-        {
-          type: "doc",
-          id: "sql-reference/operators/distributed-ddl",
-        },
-        {
-          type: "doc",
-          id: "sql-reference/operators/exists",
-        },
-        {
-          type: "category",
-          label: "Operators",
-          link: { type: "doc", id: "sql-reference/operators/index" },
-          items: [
-            {
-              type: "doc",
-              id: "sql-reference/operators/in",
-            },
-          ]
-        },
-      ],
-    },
   ],
 
   integrations: [
@@ -1753,12 +1736,6 @@ const sidebars = {
           description: "Use the right table and database engines for your data",
           href: "/engines"
         },
-        {
-          type: "link",
-          label: "Other Features",
-          description: "Learn about other features in ClickHouse",
-          href: "/sql-reference/operators"
-        }
       ]
     },
     {