If you just delete the demand that Lexx mentioned, it will give two identical dialogue texts (You are a scout? You must have...etc.), since now both are applicable after getting rid of the second demand, if you are alone.
In the Dialog Editor, you'll see that one Answer goes to Dialog [30], while the other one goes to [6].
The first dialogue Answer node (the one that goes to [30]), still has the demand factions_player@d_HasNotRequiredFollowers (2). You should delete this whole answer. After this, you should only have the answer option that goes to [6].
Note: You can also delete Dialog [30] once you do this, as nothing connects to it.
tl;dr Delete the Answer (green text) "[->6] You are a scout? You must have run across some..." and delete Dialog 30.
As well as deleting what Lexx said to delete. It should work then, I tested it.