Remove deprecated ${PYTHON_PN}-importlib from the RDEPENDS

The ${PYTHON_PN}-importlib package was removed as part of the migration to the
json manifest file.  The functionality is now part of core

Signed-off-by: Derek Straka <derek@asterius.io>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-python/recipes-devtools/python/python-django.inc

@@ -19,7 +19,6 @@ RDEPENDS_${PN} += "\
     ${PYTHON_PN}-datetime \
     ${PYTHON_PN}-email \
     ${PYTHON_PN}-html \
-    ${PYTHON_PN}-importlib \
     ${PYTHON_PN}-json \
     ${PYTHON_PN}-multiprocessing \
     ${PYTHON_PN}-netserver \