I've changed the options wording, so now it is
gsettings set com.canonical.Unity.ApplicationsLens display-available-apps false
or
gsettings set com.canonical.Unity.ApplicationsLens display-most-used-apps false
I've changed the options wording, so now it is
gsettings set com.canonical. Unity.Applicati onsLens display- available- apps false
or
gsettings set com.canonical. Unity.Applicati onsLens display- most-used- apps false