Don't use CMake for the VST3 SDK

This can't work yet.

README.md

@@ -517,7 +517,6 @@ the following dependencies:
 - A Wine installation with `winegcc` and the development headers. The latest
   commits contain a workaround for a winelib [compilation
   issue](https://bugs.winehq.org/show_bug.cgi?id=49138) with Wine 5.7+.
-- CMake for VST3 support[\*](#building-without-vst3-support)
 - Boost version 1.66 or higher[\*](#building-ubuntu-18.04)
 - libxcb
 
@@ -549,18 +548,6 @@ After you've finished building you can follow the instructions under the
   would need to be installed to compile on Ubuntu 18.04.
 </sup>
 
-### Building without VST3 support
-
-As mentioned above, building the VST3 SDK requires CMake. We might be able to
-easily replace the default build definitions for the SDK with a simple
-`meson.build` file in the future, but for now if you wish to build yabridge
-without VST3 support then you can disable it as follows:
-
-```shell
-# Disable VST3 support, removing the dependency on CMake
-meson configure build -Dwith-vst3=false
-```
-
 ### 32-bit bitbridge
 
 It is also possible to compile a host application for yabridge that's compatible