psx: Updates to panic info for 1.81.0 (~Jun 2024)

`panic_info_message` has been stable since 1.81.0
 see
https://stackoverflow.com/questions/78900800/trying-to-access-the-panic-info-message-causes-a-mismatched-types-error
 and
rust-lang/rust#115974

Author: hornc

psx/src/lib.rs

@@ -40,8 +40,6 @@
 )]
 // Used to implement `ImplsAsCStr` trait
 #![feature(min_specialization)]
-// For the panic handler
-#![feature(panic_info_message)]
 // For global_asm! on MIPS
 #![feature(asm_experimental_arch)]
 // For `__start`'s return type

psx/src/panic.rs

@@ -44,9 +44,6 @@ fn min_panic(info: &core::panic::PanicInfo) {
             println!("Panicked at unknown location")
         },
     }
-    if let Some(msg) = info.message() {
-        println!("{}", msg)
-    }
 }
 
 fn normal_panic(info: &core::panic::PanicInfo) {
@@ -70,9 +67,6 @@ fn normal_panic(info: &core::panic::PanicInfo) {
                 dprintln!(txt, "Panicked at unknown location");
             },
         }
-        if let Some(msg) = info.message() {
-            dprintln!(txt, "{}", msg);
-        }
         fb.draw_sync();
         fb.wait_vblank();
         fb.swap();