classes: Drop now unneeded update_data calls

Now that the datastore works dynamically we don't need the update_data calls
so we can just remove them. They're not actually done anything at all for
a while.

(From OE-Core rev: 8de0c5d3bd01919e2bf0394f9c485936d6098cec)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/systemd.bbclass

@@ -89,7 +89,6 @@ python systemd_populate_packages() {
         # variable.
         localdata = d.createCopy()
         localdata.prependVar("OVERRIDES", pkg + ":")
-        bb.data.update_data(localdata)
 
         postinst = d.getVar('pkg_postinst_%s' % pkg)
         if not postinst: