UIC-3272: Remove Switch Color rust implementation

This one of the two classes still handled by rust. Since rust is only partially supported, we won't maintain this.

Author: silabs-borisl

applications/zpc/components/zpc_rust/src/rust_command_handlers/zwave_command_classes/mod.rs

@@ -12,7 +12,5 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 pub mod zwave_command_class_firmware_update;
-mod zwave_command_class_switch_color;
 
 pub use zwave_command_class_firmware_update::*;
-pub use zwave_command_class_switch_color::*;