Remove obsolete methods for importing.

Assets/Cryville/Crtr/Browsing/LegacyResourceManager.cs

@@ -212,14 +212,6 @@ namespace Cryville.Crtr.Browsing {
 			Popup.Create(msg);
 		}
 
-		public string[] GetSupportedFormats() {
-			return ExtensionManager.GetSupportedFormats().ToArray();
-		}
-
-		public IReadOnlyDictionary<string, string> GetPresetPaths() {
-			return ExtensionManager.GetLocalResourcePaths();
-		}
-
 		static Chart ConvertChartData(ChartData i) {
 			return new Chart {
 				endtime = ConvertBeatTime(i.endtime),