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/grub-efi.bbclass

@@ -133,7 +133,6 @@ python build_efi_cfg() {
 
         for btype in btypes:
             localdata.setVar('OVERRIDES', label + ':' + overrides)
-            bb.data.update_data(localdata)
 
             cfgfile.write('\nmenuentry \'%s%s\'{\n' % (label, btype[0]))
             lb = label