Drop DataFrame and Series check in sim framework
Drop DataFrame and Series check in sim framework

Don't check for presence/absence of attributes, just assume that
the passed object is a DataFrame or Series if it's not a callable.

Thanks to @jiffyclub for the suggestion.

SANDAG/urbansim,bricegnichols/urbansim,apdjustino/urbansim,UDST/urbansim,AZMAG/urbansim,AZMAG/urbansim,bricegnichols/urbansim,UDST/urbansim,waddell/urbansim,VladimirTyrin/urbansim,ual/urbansim,AZMAG/urbansim,apdjustino/urbansim,UDST/urbansim,UDST/urbansim,AZMAG/urbansim,SANDAG/urbansim,synthicity/urbansim,bricegnichols/urbansim,synthicity/urbansim,SANDAG/urbansim,synthicity/urbansim,ual/urbansim,VladimirTyrin/urbansim,apdjustino/urbansim,ual/urbansim,SANDAG/urbansim,VladimirTyrin/urbansim,synthicity/urbansim,apdjustino/urbansim,waddell/urbansim,waddell/urbansim,VladimirTyrin/urbansim,ual/urbansim,waddell/urbansim,bricegnichols/urbansim