how to remove this small icon on the upper right corner

I attach the capture of the icons, i already config the dekstop policy in the advance tab->OWA version before 2013 with these items configured disable,

1.'Archive Explorer' in BasicOWAclient

2.'Archive Explorer' in Premium OWA client

3.'Search Vaults' in Basic OWA client

4.'Search Vaults' in PremiumOWAclient

but the icon still apear, does any one knows where's the setting policy to remove those icons?

regards,

Hutagalung.