Bug 1466: Remove length limit for custom command and console

https://winscp.net/tracker/1466
(cherry picked from commit 1ded573b4ede2a585ee2e0f11c35ed274ee2a602)

Source commit: 51e13412078342ed40ca9ad4af085f3e78113dbf

source/forms/Console.dfm

@@ -1447,7 +1447,6 @@ object ConsoleDialog: TConsoleDialog
     Height = 21
     AutoComplete = False
     Anchors = [akLeft, akTop, akRight]
-    MaxLength = 250
     TabOrder = 0
     OnChange = CommandEditChange
   end

source/forms/CustomCommand.dfm

@@ -72,7 +72,6 @@ object CustomCommandDialog: TCustomCommandDialog
       Height = 21
       AutoComplete = False
       Anchors = [akLeft, akTop, akRight]
-      MaxLength = 250
       TabOrder = 1
       OnChange = ControlChange
       OnGetData = CommandEditGetData