Pop-ups occuring in Chrome can be removed by restoring Chrome browser settings to their original defaults

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Launch your Google Chrome browser.
Click the three vertical dots (the menu icon) in the top-right corner of your screen.
Click on Settings.
Find the "Reset and clean up” section.
Click on “Restore settings to their original defaults.”
You’ll then be presented with the ‘Reset Settings’ box, which says that your startup page, New Tab page, search engine, and pinned tabs will be reset, that all your extensions will be disabled, and that your temporary data, such as cookies, will be cleared. However, your bookmarks, history, and saved passwords will not be cleared
Click the ‘Reset settings’ button.
Restart your browser

More information directly from google chrome: https://support.google.com/chrome/answer/3296214?visit_id=638096731053895602-1785638334&p=ui_reset_settings&rd=1