Follow these steps to remove that element from your page:
- Go to any Account record.
- On the upper left of the account record, click Edit Layout (as seen here: https://snag.gy/grZO6j.jpg).
- Once editing the layout scroll down to the Account Soft Credit section and hover over the AccountDonationList Visual Force Page. Click the circle button to remove the visual force page (as seen here: https://snag.gy/NjdbvY.jpg).
- After removing the AccountDonationList visual force page, click Save on the upper left of your screen to save the changes.