psx: Remove attribute for stabilized feature

Author: ayrtonm

psx/src/lib.rs

@@ -50,8 +50,6 @@
 #![feature(alloc_error_handler)]
 // Used in psx::hw::irq
 #![feature(variant_count)]
-// Used in psx::sys::fs
-#![feature(pointer_is_aligned)]
 // Used for crate tests
 #![feature(custom_test_frameworks)]
 #![test_runner(crate::test::runner)]