test/py: hush_if_test: Remove the test file

5804ebfeb1ce ("test: hush: Test hush if/else") translated this test to a C test,
so this python file is no more needed.

Signed-off-by: Francis Laniel <francis.laniel@amarulasolutions.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed