Remove the Q_NO_DATA_RELOCATION hack

Remove the Q_NO_DATA_RELOCATION hack

This hack was there because symbian used to have a problem with
relocations in the data section, between libraries. Hence, this was needed
so the metaobject could have a pointer to the base metaobject, despite
being in another library.

Anyway, I was told that symbian was fixed eventually. but the hack had to
stay there because of compatibility. But now that we don't even support
symbian, we can get rid of this hack totally.

Change-Id: I7249971ece35d952efa92bf8b04bf3aa3667624c
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>