Eliminate #[macro_use] from serde_derive

serde_derive/src/pretend.rs

@@ -1,6 +1,6 @@
 use crate::internals::ast::{Container, Data, Field, Style, Variant};
 use proc_macro2::TokenStream;
-use quote::format_ident;
+use quote::{format_ident, quote};
 
 // Suppress dead_code warnings that would otherwise appear when using a remote
 // derive. Other than this pretend code, a struct annotated with remote derive