message: remove extra bounds from trait
diff: @@ -188,11 +188,10 @@ pub(crate) fn query_group(args: TokenStream, input: TokenStream) -> TokenStream
  // Emit the trait itself.
  let mut output = {
  let attrs = &input.attrs;
  - let qts = queries.iter().map(|q| &q.query_type);
  let bounds = &input.supertraits;
  quote! {
  #(#attrs)*
  - #trait_vis trait #trait_name : #(salsa::plumbing::GetQueryTable<#qts> +)* #bounds {
  + #trait_vis trait #trait_name : #bounds {
  #query_fn_declarations
  }
  }
  