Don't duplicate the lint description

Author: JonathanBrouwer

clippy_lints/src/methods/unbuffered_bytes.rs

@@ -6,7 +6,6 @@ use rustc_hir as hir;
 use rustc_lint::LateContext;
 use rustc_span::sym;
 
-/// lint to detect `.bytes()` on an unbuffered type such as a `File` or `TcpStream`
 pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr<'_>) {
     // Retrieve the DefId of the BufRead trait
     // FIXME: add a diagnostic item for `BufRead`