Empty keypress attribute breaks AMP compatibility

I just noticed that Zakra is adding an empty keypress attribute in the zakra_add_submenu_icon() function: https://themes.trac.www.ads-software.com/browser/zakra/3.0.20/template-parts/hooks/header/primary-menu.php#L120

This doesn’t have any effect. Also, it causes the AMP plugin to report a validation error since this is inline event handlers aren’t allowed by the AMP spec.

Can this attribute be removed?

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