fix: linker

Author: nhtyy

library/panic_abort/src/zkvm.rs

@@ -14,13 +14,8 @@ pub(crate) unsafe fn zkvm_set_abort_message(payload: &mut dyn PanicPayload) {
     };
 
     extern "C" {
-        fn syscall_halt(exit_code: u8) -> !;
         fn sys_panic(msg_ptr: *const u8, len: usize) -> !;
     }
 
-    if msg.is_empty() {
-        syscall_halt(1);
-    }
-
     sys_panic(msg.as_ptr(), msg.len());
 }