depends: Remove reference to win32

win32 is no longer mentioned in doc/build-windows.md

Author: MarcoFalke

depends/README.md

@@ -46,7 +46,7 @@ The paths are automatically configured and no other options are needed unless ta
 
     sudo apt-get install curl librsvg2-bin libtiff-tools bsdmainutils cmake imagemagick libcap-dev libz-dev libbz2-dev python3-setuptools
 
-#### For Win32/Win64 cross compilation
+#### For Win64 cross compilation
 
 - see [build-windows.md](../doc/build-windows.md#cross-compilation-for-ubuntu-and-windows-subsystem-for-linux)