distutils-common-base: do not set PACKAGES - use defaults from bitbake.conf

it took me a while to understand why PACKAGE_BEFORE_PN did not work...

(From OE-Core rev: 50f0a2a041df679f06c0b93a0472905e8c129bd4)

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/distutils-common-base.bbclass

@@ -5,8 +5,6 @@ EXTRA_OEMAKE = ""
 export STAGING_INCDIR
 export STAGING_LIBDIR
 
-PACKAGES = "${PN}-staticdev ${PN}-dev ${PN}-dbg ${PN}-doc ${PN}"
-
 FILES_${PN} += "${libdir}/* ${libdir}/${PYTHON_DIR}/*"
 
 FILES_${PN}-staticdev += "\