With some of the stricter type checking in KUnit's EXPECT macros
removed, several casts in property-entry-test are no longer required.

Remove the unnecessary casts, making the conditions clearer.
Signed-off-by: NDavid Gow <davidgow@google.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: NBrendan Higgins <brendanhiggins@google.com>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>