Remove no-longer-existant lifetime

Author: Manishearth

src/driver.rs

@@ -65,7 +65,7 @@ fn test_arg_value() {
 struct ClippyCallbacks;
 
 impl rustc_driver::Callbacks for ClippyCallbacks {
-    fn after_parsing(&mut self, compiler: &interface::Compiler<'_>) -> bool {
+    fn after_parsing(&mut self, compiler: &interface::Compiler) -> bool {
         let sess = compiler.session();
         let mut registry = rustc_plugin::registry::Registry::new(
             sess,