Remove classic export warning message

- Issue MatterHackers/MCCentral#5158
Export Error

MatterControlLib/Library/Export/GCodeExport.cs

@@ -245,24 +245,14 @@ namespace MatterHackers.MatterControl.Library.Export
 						if (File.Exists(gcodePath))
 						{
 							ApplyStreamPipelineAndExport(gcodePath, outputPath);
-
-							// last let's check if there is any support in the scene and if it looks like it is needed
-							var supportGenerator = new SupportGenerator(printer.Bed.Scene);
-							if (supportGenerator.RequiresSupport())
-							{
-								UiThread.RunOnIdle(() =>
-								{
-									var warning = "Some of the parts appear to require support. Consider adding support and re-exporting to get the best results possible.".Localize();
-									StyledMessageBox.ShowMessageBox(warning, "Warning: Support Required".Localize());
-								});
-							}
-
 							return errors;
 						}
 					}
 					catch
 					{
 					}
+
+					return new List<ValidationError>();
 				}
 			}