Remove deprecated python3-lang from the RDEPENDS

The python3-lang 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/python3-pyudev_0.21.0.bb

@@ -1,8 +1,2 @@
 require python-pyudev.inc
-
-RDEPENDS_${PN} = "\
-    ${PYTHON_PN}-lang \
-"
-
 inherit pypi setuptools3
-