platforms/stm32f7: remove GEPRC UART diagnostic

boards/geprc-f722-v2/src/main.rs

@@ -1,11 +1,6 @@
 #![no_std]
 #![no_main]
 
-#[cfg(not(feature = "uart2-wire-test"))]
 mod board;
 
-#[cfg(feature = "uart2-wire-test")]
-platform_stm32f7::geprc_uart2_wire_test!();
-
-#[cfg(not(feature = "uart2-wire-test"))]
 platform_stm32f7::flight_firmware!(board::GeprcF722V2);