chore: Remove all usage of collection.type (#1445)

* chore: Remove all usage of collection.type

* migration: Remove type column

server/api/collections.js

@@ -30,7 +30,7 @@ const { authorize } = policy;
 const router = new Router();
 
 router.post("collections.create", auth(), async (ctx) => {
-  const { name, color, description, icon, type } = ctx.body;
+  const { name, color, description, icon } = ctx.body;
   const isPrivate = ctx.body.private;
   ctx.assertPresent(name, "name is required");
 
@@ -46,7 +46,6 @@ router.post("collections.create", auth(), async (ctx) => {
     description,
     icon,
     color,
-    type: type || "atlas",
     teamId: user.teamId,
     creatorId: user.id,
     private: isPrivate,