Remove unnecessary panic_handler feature

GabrielMajeri · GabrielMajeri · commit 6f1de21bd996 · 2018-09-16T15:09:31.000+03:00
It's been stabilized.
diff --git a/uefi-services/src/lib.rs b/uefi-services/src/lib.rs
@@ -12,7 +12,6 @@
 #![no_std]
 
 #![feature(lang_items)]
-#![feature(panic_handler)]
 #![feature(panic_info_message)]
 #![feature(alloc_error_handler)]
 
