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/recipes-devtools/gcc/gcc-common.inc

@@ -71,7 +71,6 @@ def get_tune_parameters(tune, d):
     localdata = bb.data.createCopy(d)
     override = ':tune-' + tune
     localdata.setVar('OVERRIDES', localdata.getVar('OVERRIDES', False) + override)
-    bb.data.update_data(localdata)
 
     retdict = {}
     retdict['tune'] = tune