Removed checks/conversions of longflux and shortflux inputs in goes_lx() as this is already checked in _calc_xraylum().
Removed checks/conversions of longflux and shortflux inputs in goes_lx()
as this is already checked in _calc_xraylum().

Alex-Ian-Hamilton/sunpy,dpshelio/sunpy,Alex-Ian-Hamilton/sunpy,Alex-Ian-Hamilton/sunpy,dpshelio/sunpy,dpshelio/sunpy