Add notes to some WinForms controls that were deleted in .NET Core 3.1

In .NET Core 3.1 we removed some deprecated WinForms controls that were considered (but never market with an attribute) deprecated since 2005. Here is the [related item](https://github.com/dotnet/docs/issues/15813) with the description of all APIs. We need to add a note in the documentation of those controls that they were not included in .NET Core 3.1 and further and there are a newer options for each control (listed in the [related item](https://github.com/dotnet/docs/issues/15813) )