Gmail by default shows ads also called web clips above the list of emails. It’s easy to switch these off but they’re not intuitively named when looking at Gmail’s settings. This post shows how to switch them off.
To remove the web clips, click the settings cog icon above-right from the message list. This will show a drop down menu where you can select the Settings option.
On the next page along the top of the settings are a series of tabs/options. Open the Web Clips tab and uncheck the Show my web clips above the Inbox checkbox. You don’t need to click a button to save, it immediately takes effect.
Now go back to your inbox and there are no longer any ads above the message list.