Unify spanned and non-spanned Attribute ctors

There is no difference in the code/arguments, so go with the shorter
name throughout the code.

src/librustc/hir/lowering.rs

@@ -5168,7 +5168,7 @@ impl<'a> LoweringContext<'a> {
                         let uc_nested = attr::mk_nested_word_item(uc_ident);
                         attr::mk_list_item(e.span, allow_ident, vec![uc_nested])
                     };
-                    attr::mk_spanned_attr_outer(e.span, attr::mk_attr_id(), allow)
+                    attr::mk_attr_outer(e.span, attr::mk_attr_id(), allow)
                 };
                 let attrs = vec![attr];
 

src/libsyntax/attr/mod.rs

@@ -376,37 +376,27 @@ pub fn mk_attr_id() -> AttrId {
     AttrId(id)
 }
 
-/// Returns an inner attribute with the given value.
-pub fn mk_attr_inner(span: Span, id: AttrId, item: MetaItem) -> Attribute {
-    mk_spanned_attr_inner(span, id, item)
-}
-
 /// Returns an inner attribute with the given value and span.
-pub fn mk_spanned_attr_inner(sp: Span, id: AttrId, item: MetaItem) -> Attribute {
+pub fn mk_attr_inner(span: Span, id: AttrId, item: MetaItem) -> Attribute {
     Attribute {
         id,
         style: ast::AttrStyle::Inner,
         path: item.path,
         tokens: item.node.tokens(item.span),
         is_sugared_doc: false,
-        span: sp,
+        span,
     }
 }
 
-/// Returns an outer attribute with the given value.
-pub fn mk_attr_outer(span: Span, id: AttrId, item: MetaItem) -> Attribute {
-    mk_spanned_attr_outer(span, id, item)
-}
-
 /// Returns an outer attribute with the given value and span.
-pub fn mk_spanned_attr_outer(sp: Span, id: AttrId, item: MetaItem) -> Attribute {
+pub fn mk_attr_outer(span: Span, id: AttrId, item: MetaItem) -> Attribute {
     Attribute {
         id,
         style: ast::AttrStyle::Outer,
         path: item.path,
         tokens: item.node.tokens(item.span),
         is_sugared_doc: false,
-        span: sp,
+        span,
     }
 }
 

src/libsyntax/ext/build.rs

@@ -1135,7 +1135,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
     }
 
     fn attribute(&self, sp: Span, mi: ast::MetaItem) -> ast::Attribute {
-        attr::mk_spanned_attr_outer(sp, attr::mk_attr_id(), mi)
+        attr::mk_attr_outer(sp, attr::mk_attr_id(), mi)
     }
 
     fn meta_word(&self, sp: Span, w: ast::Name) -> ast::MetaItem {

src/libsyntax/ext/expand.rs

@@ -1341,8 +1341,8 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
 
             let meta = attr::mk_list_item(DUMMY_SP, Ident::with_empty_ctxt(sym::doc), items);
             match at.style {
-                ast::AttrStyle::Inner => *at = attr::mk_spanned_attr_inner(at.span, at.id, meta),
-                ast::AttrStyle::Outer => *at = attr::mk_spanned_attr_outer(at.span, at.id, meta),
+                ast::AttrStyle::Inner => *at = attr::mk_attr_inner(at.span, at.id, meta),
+                ast::AttrStyle::Outer => *at = attr::mk_attr_outer(at.span, at.id, meta),
             }
         } else {
             noop_visit_attribute(at, self)