diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 13027f2104b0..de79cc3014c2 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -119,24 +119,6 @@ with pkgs;
     callTest = t: t.test;
   };
 
-  ### Traversal for package tests
-
-  # Whereas most tests can be run with `nix-build -A my-package.tests`, this
-  # does not work for tests on a __functor attrset.
-  # TODO: enable these on hydra.nixos.org?
-  packageTests = let
-    getTests = attrs:
-      if builtins.typeOf attrs != "set"
-      then {}
-      else if lib.isDerivation attrs
-        then lib.recurseIntoAttrs attrs.tests or {}
-        else if attrs?__functor
-        then lib.recurseIntoAttrs attrs.tests or {}
-        else lib.mapAttrs (k: if k == "recurseForDerivations" then v: v else getTests) attrs;
-    in
-      getTests pkgs;
-
-
   ### BUILD SUPPORT
 
   auditBlasHook = makeSetupHook