Update build.md

Documentation/build.md

@@ -16,7 +16,7 @@ Go to https://dotnet.microsoft.com/download/visual-studio-sdks and install the l
 
 ###  Open in Visual Studio
 
-Open the `Avalonia.sln` solution in Visual Studio 2019 or newer. The free Visual Studio Community edition works fine. Build and run the `Samples\ControlCatalog.Desktop` or `ControlCatalog.NetCore` project to see the sample application.
+Open the `Avalonia.sln` solution in Visual Studio 2022 or newer. The free Visual Studio Community edition works fine. Build and run the `Samples\ControlCatalog.Desktop` or `ControlCatalog.NetCore` project to see the sample application.
 
 ### Troubleshooting
 
@@ -45,15 +45,6 @@ The build process needs [Xcode](https://developer.apple.com/xcode/) to build the
 
 Linux operating systems ship with their own respective package managers however we will use [Homebrew](https://brew.sh/) to manage packages on macOS.  To install follow the instructions [here](https://docs.brew.sh/Installation).
 
-###  Install CastXML (pre Nov 2020)
-
-Avalonia requires [CastXML](https://github.com/CastXML/CastXML) for XML processing during the build process.  The easiest way to install this is via the operating system's package managers, such as below.
-
-On macOS:
-```
-brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/8a004a91a7fcd3f6620d5b01b6541ff0a640ffba/Formula/castxml.rb
-```
-
 On Debian based Linux (Debian, Ubuntu, Mint, etc):
 ```
 sudo apt install castxml