Remove superflouos doc comments

src/unix/mod.rs

@@ -232,7 +232,6 @@ pub const INADDR_NONE: in_addr_t = 4294967295;
 cfg_if! {
     if #[cfg(any(dox, target_os = "l4re"))] {
         // on dox builds don't pull in anything
-        // L4Re builds pass the required libs using -Z to the compiler.
     } else if #[cfg(all(not(stdbuild), feature = "use_std"))] {
         // cargo build, don't pull in anything extra as the libstd  dep
         // already pulls in all libs.

src/unix/uclibc/x86_64/l4re.rs

 /// L4Re specifics
 /// This module contains definitions required by various L4Re libc backends.
-/// These are formally not part of the libc, but are a dependency of the libc
-/// and hence we should provide them here.
+/// Some of them are formally not part of the libc, but are a dependency of the libc and hence we
+/// should provide them here.
 
 pub type l4_umword_t = ::c_ulong; // Unsigned machine word.