oe-selftest: drop redundant imports

(From OE-Core rev: 95e26e937b37c02646c2481915ddba616fe754ba)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/oe-selftest

@@ -18,8 +18,6 @@
 
 import os
 import sys
-import argparse
-import logging
 
 scripts_path = os.path.dirname(os.path.realpath(__file__))
 lib_path = scripts_path + '/lib'