Remove DPA campaign guide from public documentation

Generated-By: mintlify-agent

Author: mintlify[bot]

docs.json

@@ -995,13 +995,7 @@
                   {
                     "group": "Campaign Management",
                     "pages": [
-                      "x-ads-api/campaign-management",
-                      {
-                        "group": "Guides",
-                        "pages": [
-                          "x-ads-api/guides/create-a-dpa-campaign"
-                        ]
-                      }
+                      "x-ads-api/campaign-management"
                     ]
                   },
                   "x-ads-api/catalog-management",