Corrected imports for render tests and mod files

Due to a rebase, some edits were needed in the mod file.

src/librustdoc/html/render/mod.rs

@@ -1,5 +1,3 @@
-// ignore-tidy-filelength
-
 //! Rustdoc's HTML rendering module.
 //!
 //! This modules contains the bulk of the logic necessary for rendering a

src/librustdoc/html/render/tests.rs

@@ -1,4 +1,7 @@
-use super::*;
+use std::cmp::Ordering;
+
+use super::print_item::compare_names;
+use super::{AllTypes, Buffer};
 
 #[test]
 fn test_compare_names() {