do not completely suppress warning with test code

Author: Jared-Prime

clippy_lints/src/exit.rs

@@ -56,10 +56,6 @@ declare_lint_pass!(Exit => [EXIT]);
 
 impl<'tcx> LateLintPass<'tcx> for Exit {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) {
-        if cx.sess().is_test_crate() {
-            return;
-        }
-
         if let ExprKind::Call(path_expr, [_]) = e.kind
             && let ExprKind::Path(ref path) = path_expr.kind
             && let Some(def_id) = cx.qpath_res(path, path_expr.hir_id).opt_def_id()