Remove warnings

src/lib.rs

@@ -1,4 +1,3 @@
-#![feature(no_std)]
 #![no_std]
 
 pub use elf_sections::{ElfSectionsTag, ElfSection, ElfSectionIter, ElfSectionType, ElfSectionFlags};

src/memory_map.rs

@@ -27,7 +27,6 @@ pub struct MemoryArea {
     _reserved: u32,
 }
 
-#[allow(raw_pointer_derive)]
 #[derive(Clone)]
 pub struct MemoryAreaIter {
     current_area: *const MemoryArea,