Remove duplicate variable definition.
Remove duplicate variable definition.

These variables are defined also locally in the functions where needed,
and were kept in error presumably due to mistakes in a merge.

namecoin/namecore,pataquets/namecoin-core,namecoin/namecore,brandonrobertz/namecoin-core,namecoin/namecore,domob1812/huntercore,brandonrobertz/namecoin-core,domob1812/huntercore,domob1812/namecore,pataquets/namecoin-core,namecoin/namecoin-core,domob1812/namecore,brandonrobertz/namecoin-core,domob1812/huntercore,brandonrobertz/namecoin-core,namecoin/namecore,namecoin/namecore,namecoin/namecore,brandonrobertz/namecoin-core,pataquets/namecoin-core,namecoin/namecoin-core,namecoin/namecoin-core,namecoin/namecoin-core,domob1812/namecore,domob1812/namecore,namecoin/namecoin-core,domob1812/huntercore,pataquets/namecoin-core,pataquets/namecoin-core,namecoin/namecoin-core,domob1812/huntercore,domob1812/namecore,pataquets/namecoin-core,brandonrobertz/namecoin-core,domob1812/namecore,domob1812/huntercore