services/friendbot: removed friendbot is disabled error messages that…

… is dead code (#4059)

services/friendbot/internal/friendbot_handler.go

@@ -32,12 +32,7 @@ func (handler *FriendbotHandler) Handle(w http.ResponseWriter, r *http.Request)
 
 // doHandle is just a convenience method that returns the object to be rendered
 func (handler *FriendbotHandler) doHandle(r *http.Request) (*horizon.Transaction, error) {
-	err := handler.checkEnabled()
-	if err != nil {
-		return nil, err
-	}
-
-	err = r.ParseForm()
+	err := r.ParseForm()
 	if err != nil {
 		p := problem.BadRequest
 		p.Detail = "Request parameters are not escaped or incorrectly formatted."
@@ -51,19 +46,6 @@ func (handler *FriendbotHandler) doHandle(r *http.Request) (*horizon.Transaction
 	return handler.Friendbot.Pay(address)
 }
 
-func (handler *FriendbotHandler) checkEnabled() error {
-	if handler.Friendbot != nil {
-		return nil
-	}
-
-	return &problem.P{
-		Type:   "friendbot_disabled",
-		Title:  "Friendbot is disabled",
-		Status: http.StatusForbidden,
-		Detail: "Friendbot is disabled on this network. Contact the server administrator if you believe this to be in error.",
-	}
-}
-
 func (handler *FriendbotHandler) loadAddress(r *http.Request) (string, error) {
 	address := r.Form.Get("addr")
 	unescaped, err := url.QueryUnescape(address)