Rustup to rustc 1.16.0-nightly (468227129 2017-01-03): Eliminate has_self util

clippy_lints/src/utils/mod.rs

@@ -906,6 +906,3 @@ pub fn is_self(slf: &Arg) -> bool {
     }
 }
 
-pub fn has_self(slf: &FnDecl) -> bool {
-    slf.inputs.get(0).map(|arg| is_self(&arg)).unwrap_or(false)
-}