webadmin: fix remove issues in Add-Bricks popup

When the user clicks 'Remove' button after selecting
one or more brick in the Add-Bricks popup, the data
is not rendered properly post removal.
This is now fixed.

Change-Id: I809d894d81ec6f46f6fb11085b5a5cdc0be00f3d
Bug-Url: https://bugzilla.redhat.com/989213
Signed-off-by: Kanagaraj M <kmayilsa@redhat.com>