Remove allow(missing_copy_implementations) attributes.

This is now the default.

components/style/lib.rs

@@ -10,8 +10,6 @@
 #![feature(collections)]
 #![feature(rustc_private)]
 
-#![allow(missing_copy_implementations)]
-
 #![plugin(string_cache_plugin)]
 #![plugin(mod_path)]
 

components/style/media_queries.rs

@@ -100,7 +100,6 @@ pub enum MediaType {
     Unknown,
 }
 
-#[allow(missing_copy_implementations)]
 #[derive(Debug)]
 pub struct Device {
     pub media_type: MediaType,

components/style/properties.mako.rs

@@ -3395,7 +3395,6 @@ pub mod shorthands {
             use parser::ParserContext;
             use properties::longhands;
 
-            #[allow(missing_copy_implementations)]
             pub struct Longhands {
                 % for sub_property in shorthand.sub_properties:
                     pub ${sub_property.ident}:
@@ -4203,7 +4202,6 @@ pub mod style_structs {
     use super::longhands;
 
     % for style_struct in STYLE_STRUCTS:
-        #[allow(missing_copy_implementations)]
         #[derive(PartialEq, Clone)]
         pub struct ${style_struct.name} {
             % for longhand in style_struct.longhands:

components/style/values.rs

@@ -878,7 +878,6 @@ pub mod computed {
     use url::Url;
     use util::geometry::Au;
 
-    #[allow(missing_copy_implementations)]  // It’s kinda big
     pub struct Context {
         pub inherited_font_weight: longhands::font_weight::computed_value::T,
         pub inherited_font_size: longhands::font_size::computed_value::T,