## Context
WorkspaceIsUnique decorator allows us to create unique indexes on our
tables. Here Emails is a composite field containing a TEXT subfield. Due
to the fact that TEXT fields are non-nullable and have empty strings as
default values, adding a unique index on a TEXT field or any composite
containing TEXT as subfields will fail and throw if we try to create
more than 1 record that does not specify a value to the TEXT field.
This PR simply removes the index for the time being until we find a
solution
Weiko
c0610419c2