Remove vestigial derives (bevyengine#3343)

These derives seem to be leftover vestiges of the old renderer.

At least removing them doesn't seem to harm anything.

edit: thanks `@forbjok` on discord for pointing this out.

crates/bevy_derive/src/lib.rs

@@ -5,8 +5,6 @@ mod bevy_main;
 mod bytes;
 mod enum_variant_meta;
 mod modules;
-mod render_resource;
-mod render_resources;
 mod shader_defs;
 
 use bevy_macro_utils::{derive_label, BevyManifest};
@@ -19,19 +17,6 @@ pub fn derive_bytes(input: TokenStream) -> TokenStream {
     bytes::derive_bytes(input)
 }
 
-/// Derives the RenderResources trait. Each field must implement RenderResource or this will fail.
-/// You can ignore fields using `#[render_resources(ignore)]`.
-#[proc_macro_derive(RenderResources, attributes(render_resources))]
-pub fn derive_render_resources(input: TokenStream) -> TokenStream {
-    render_resources::derive_render_resources(input)
-}
-
-/// Derives the RenderResource trait. The type must also implement `Bytes` or this will fail.
-#[proc_macro_derive(RenderResource)]
-pub fn derive_render_resource(input: TokenStream) -> TokenStream {
-    render_resource::derive_render_resource(input)
-}
-
 /// Derives the ShaderDefs trait. Each field must implement ShaderDef or this will fail.
 /// You can ignore fields using `#[shader_defs(ignore)]`.
 #[proc_macro_derive(ShaderDefs, attributes(shader_def))]

crates/bevy_derive/src/modules.rs

@@ -1,4 +1,3 @@
-pub const BEVY_ASSET: &str = "bevy_asset";
 pub const BEVY_CORE: &str = "bevy_core";
 pub const BEVY_RENDER: &str = "bevy_render";
 pub const BEVY_UTILS: &str = "bevy_utils";