Remove group type from AccountGroupInfoScreen

The information about the group type was not much helpful. All groups
that can be seen in Gerrit are of type 'INTERNAL', except a few
well-known system groups which are of type 'SYSTEM'. The system groups
are so well-known that there is no need to display the type for them.

Especially the type selection box was pretty pointless as you could
only choose 'INTERNAL' as type.

This change also removes the RPC for changing the group type as it is
not needed anymore.

Change-Id: I16d5a8056d0993bcdd810b76ab8379c67f475a6a
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
7 files changed