Remove /spawn POST endpoint

This was increasing complexity for no added benefit

	/register now performs the spawn in 4 lines of code

pkg/rove/api.go

@@ -46,30 +46,6 @@ type RegisterResponse struct {
 	Id string `json:"id"`
 }
 
-// ==============================
-// API: /{account}/spawn method: POST
-
-// Spawn spawns the rover for an account
-// Responds with the position of said rover
-func (s Server) Spawn(account string, d SpawnData) (r SpawnResponse, err error) {
-	err = s.Post(path.Join(account, "spawn"), d, &r)
-	return
-}
-
-// SpawnData is the data to be sent for the spawn command
-type SpawnData struct {
-	// Empty for now, reserved for data
-}
-
-// SpawnResponse is the data to respond with on a spawn command
-type SpawnResponse struct {
-	Success bool   `json:"success"`
-	Error   string `json:"error,omitempty"`
-
-	// The attributes of the spawned entity
-	Attributes game.RoverAttributes `json:"attributes"`
-}
-
 // ==============================
 // API: /{account}/command method: POST