If one deletes (or edits) the following trigger, a Town Hall will not be created at the starting location.
[TRIGGER=Melee Initialization]Melee Initialization
Events
Map initialization
Conditions
Actions
Melee Game - Use melee time of day (for all players)
Melee Game - Limit Heroes to 1 per Hero-type (for all players)
Melee Game - Give trained Heroes a Scroll of Town Portal (for all players)
Melee Game - Set starting resources (for all players)
Melee Game - Remove creeps and critters from used start locations (for all players)
Melee Game - Create starting units (for all players)
Melee Game - Run melee AI scripts (for computer players)
Melee Game - Enforce victory/defeat conditions (for all players)
[/TRIGGER]