platforms/stm32f7: remove GEPRC UART diagnostic

platforms/stm32f7/src/lib.rs

@@ -19,7 +19,6 @@ mod f722;
 
 /// Dependencies used only while the platform expands its private RTIC macro.
 /// They stay crate-private: board binaries never name them.
-#[cfg(target_arch = "arm")]
 pub(crate) mod __platform_internal {
     pub(crate) use cortex_m as cm;
     pub(crate) use cortex_m_rt as cmrt;
@@ -31,15 +30,6 @@ pub(crate) mod __platform_internal {
     pub(crate) use stm32f7 as pac;
 }
 
-/// The isolated diagnostic macro expands an entry attribute in a board binary.
-/// Rust macro visibility requires this one dependency to be reachable; it is
-/// not a platform configuration or execution API.
-#[cfg(target_arch = "arm")]
-#[doc(hidden)]
-pub mod __macro_support {
-    pub use cortex_m_rt;
-}
-
 /// Construction or validation failure for a declarative F722 board.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum BoardError {
@@ -430,26 +420,6 @@ macro_rules! flight_firmware {
     };
 }
 
-/// Installs the isolated GEPRC UART2 physical-route diagnostic image.
-///
-/// This diagnostic never installs the flight application.  It remains a
-/// platform-owned image and is intentionally separate from board declarations.
-#[macro_export]
-macro_rules! geprc_uart2_wire_test {
-    () => {
-        #[$crate::__macro_support::cortex_m_rt::entry]
-        fn main() -> ! {
-            $crate::__private::geprc_uart2_wire_test()
-        }
-    };
-}
-
-/// Implementation support consumed only by the exported firmware macros.
-#[doc(hidden)]
-pub mod __private {
-    pub use crate::f722::geprc_uart2_wire_test;
-}
-
 /// Link anchor for the platform-owned F722 RTIC application.
 #[doc(hidden)]
 pub fn firmware_anchor() {}