Revert "updating"
Revert "updating"

Unintentional astropy_helpers commit crept in again

This reverts commit 2b4cc739391e66133261426453381111684375aa.

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