remove empty pages (#2253)

Author: motatoes

docs/mint.json

@@ -56,9 +56,6 @@
         "ce/state-management/cloud-backend",
         "ce/state-management/rbac",
         "ce/state-management/sso",
-        "ce/state-management/digger-integration",
-        "ce/state-management/api-reference",
-        "ce/state-management/cli-reference",
         "ce/state-management/development",
         "ce/state-management/analytics"
       ]