Refactor: remove unused usings

src/AppCommon/FileTime.App.Core/Services/UserCommandHandler/ToolUserCommandHandlerService.cs

@@ -4,7 +4,6 @@ using FileTime.App.ContainerSizeScanner;
 using FileTime.App.Core.UserCommand;
 using FileTime.App.Core.ViewModels;
 using FileTime.App.Search;
-using FileTime.Core.Command;
 using FileTime.Core.ContentAccess;
 using FileTime.Core.Enums;
 using FileTime.Core.Interactions;

src/AppCommon/FileTime.App.Core/Services/UserCommandHandler/UserCommandHandlerServiceBase.cs

@@ -1,7 +1,6 @@
 using System.Collections.ObjectModel;
 using System.Reactive.Linq;
 using DeclarativeProperty;
-using DynamicData;
 using FileTime.App.Core.ViewModels;
 using FileTime.Core.Models;
 using FileTime.Core.Timeline;