uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/interpreters/python/hooks/python-remove-tests-dir-hook.sh

@@ -0,0 +1,15 @@
+# Clean up top-level tests directory in site-package installation.
+echo "Sourcing python-remove-tests-dir-hook"
+
+pythonRemoveTestsDir() {
+    echo "Executing pythonRemoveTestsDir"
+
+    rm -rf $out/@pythonSitePackages@/tests
+    rm -rf $out/@pythonSitePackages@/test
+
+    echo "Finished executing pythonRemoveTestsDir"
+}
+
+if [ -z "${dontUsePythonRemoveTestsDir-}" ]; then
+    postFixupHooks+=(pythonRemoveTestsDir)
+fi