Cant cancel an Uninstall so make it a normal notification

src/Umbraco.Core/Events/UninstallPackageNotification.cs

@@ -3,13 +3,11 @@ using Umbraco.Cms.Core.Packaging;
 
 namespace Umbraco.Cms.Core.Events
 {
-    public class UninstallPackageNotification : ICancelableNotification
+    public class UninstallPackageNotification : INotification
     {
         public UninstallPackageNotification(IEnumerable<UninstallationSummary> uninstallationSummary) => UninstallationSummary = uninstallationSummary;
 
         public IEnumerable<UninstallationSummary> UninstallationSummary { get; }
-
-        public bool Cancel { get; set; }
     }
 }