Removed executable flag from hexdiff.py.
Removed executable flag from hexdiff.py.

anthraxx/binwalk,pyq881120/binwalk,anthraxx/binwalk,pombredanne/binwalk,Eih3/binwalk,naterh/binwalk,ddcc/binwalk,thx0701/binwalk,goofwear/binwalk,hyper-xx/binwalk,MaiPhuoc/binwalk,WooyunDota/binwalk,Eih3/binwalk,zhuyue1314/binwalk,Flameeyes/binwalk,thx0701/binwalk,itsens/binwalk,cappiewu/binwalk,sundhaug92/binwalk,ddcc/binwalk,sviehb/binwalk,chubbymaggie/binwalk,chubbymaggie/binwalk,itsens/binwalk,UniqMartin/binwalk,pyq881120/binwalk,jiangbing9293/binwalk,gale320/binwalk,jiangbing9293/binwalk,peterdocter/binwalk,hyper-xx/binwalk,WooyunDota/binwalk,MaiPhuoc/binwalk,zhuyue1314/binwalk,devttys0/binwalk,emprovements/binwalk,emprovements/binwalk,foreni-packages/binwalk,geekspeed/binwalk,naterh/binwalk,foreni-packages/binwalk,devttys0/binwalk,0x7678/binwalk,cristianst85/binwalk,Flameeyes/binwalk,draekko/binwalk,cristianst85/binwalk,draekko/binwalk,foreni-packages/binwalk,pombredanne/binwalk,peterdocter/binwalk,geekspeed/binwalk,goofwear/binwalk,gale320/binwalk,cappiewu/binwalk,UniqMartin/binwalk,sundhaug92/binwalk,sviehb/binwalk,AmesianX/binwalk,AmesianX/binwalk