engine-core: remove malfunctioning maven repo
engine-core: remove malfunctioning maven repo

This patch removes
http://google-web-toolkit.googlecode.com/svn/${gwt.version}/gwt/maven
from the list of repositories, since after gwt version 2.1 it is no
longer maintained. Current gwt version is 2.2.0, artifacts are actually
resolved from central repository.

Change-Id: Ia643d9019ae0e44a059f6c0e06cab35612113572

Dhandapani/gluster-ovirt,raksha-rao/gluster-ovirt,halober/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,OpenUniversity/ovirt-engine,anjalshireesh/gluster-ovirt-poc,yingyun001/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,zerodengxinchao/ovirt-engine,halober/ovirt-engine,raksha-rao/gluster-ovirt,yapengsong/ovirt-engine,OpenUniversity/ovirt-engine,Dhandapani/gluster-ovirt,anjalshireesh/gluster-ovirt-poc,anjalshireesh/gluster-ovirt-poc,walteryang47/ovirt-engine,raksha-rao/gluster-ovirt,walteryang47/ovirt-engine,eayun/ovirt-engine,derekhiggins/ovirt-engine,eayun/ovirt-engine,Dhandapani/gluster-ovirt,walteryang47/ovirt-engine,raksha-rao/gluster-ovirt,yingyun001/ovirt-engine,yingyun001/ovirt-engine,OpenUniversity/ovirt-engine,derekhiggins/ovirt-engine,derekhiggins/ovirt-engine,yingyun001/ovirt-engine,derekhiggins/ovirt-engine,anjalshireesh/gluster-ovirt-poc,halober/ovirt-engine,Dhandapani/gluster-ovirt,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,halober/ovirt-engine,yapengsong/ovirt-engine,yapengsong/ovirt-engine,OpenUniversity/ovirt-engine,eayun/ovirt-engine,eayun/ovirt-engine,Dhandapani/gluster-ovirt,anjalshireesh/gluster-ovirt-poc,zerodengxinchao/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,raksha-rao/gluster-ovirt,yapengsong/ovirt-engine