Corrected unintended changes from the rebase

Author: theo-lw

clippy_lints/src/lib.rs

@@ -60,7 +60,6 @@ extern crate rustc_trait_selection;
 #[allow(unused_extern_crates)]
 extern crate rustc_typeck;
 
-use rustc::session::Session;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_lint::LintId;
 use rustc_session::Session;

clippy_lints/src/macro_use.rs

@@ -229,6 +229,4 @@ impl<'l, 'txc> LateLintPass<'l, 'txc> for MacroUseImports {
             }
         }
     }
-
-    mac.path.clone()
 }