webadmin: remove redundant methods in ImportEntityData

Remove redundant setEntity/getEntity methods from
ImportEntityData (to avoid warning [1]).

[1] "CID 1223214:  Missing call to superclass  (CALL_SUPER)"

Change-Id: Ifdb7706da4976bb889d2a5b1cee498746619dbc9
Signed-off-by: Daniel Erez <derez@redhat.com>