Don't need to init testr in run_tests.sh
Don't need to init testr in run_tests.sh

In run_tests.sh, function init_testr will initialize testr if the
directory .testrepository is not existed. Actually, testr will do
the check before run the test:

In Python package testrepository, setuptools_command.py:Testr.run

68 def run(self):
69     """Set up testr repo, then run testr"""
70     if not os.path.isdir(".testrepository"):
71         self._run_testr("init")

So, init_testr can be removed safely.

Fixes Bug #1224285

Change-Id: Ia74d9fff92b8efba9b72e5c7387f761144daa193

cisco-openstack/neutron,noironetworks/neutron,infobloxopen/neutron,noironetworks/neutron,Juniper/neutron,Comcast/neutron,asgard-lab/neutron,kaiweifan/neutron,beagles/neutron_hacking,SmartInfrastructures/neutron,Comcast/neutron,waltBB/neutron_read,antonioUnina/neutron,klmitch/neutron,jerryz1982/neutron,alexandrucoman/vbox-neutron-agent,dims/neutron,watonyweng/neutron,vbannai/neutron,igor-toga/local-snat,cisco-openstack/neutron,CiscoSystems/vespa,leeseuljeong/leeseulstack_neutron,redhat-openstack/neutron,gkotton/neutron,asgard-lab/neutron,Juniper/neutron,paninetworks/neutron,gopal1cloud/neutron,ntt-sic/neutron,bigswitch/neutron,sebrandon1/neutron,vbannai/neutron,Juniper/neutron,rdo-management/neutron,skyddv/neutron,projectcalico/calico-neutron,Stavitsky/neutron,vivekanand1101/neutron,gkotton/neutron,sajuptpm/neutron-ipam,paninetworks/neutron,Stavitsky/neutron,wolverineav/neutron,zhhf/charging,swdream/neutron,sajuptpm/neutron-ipam,mahak/neutron,Metaswitch/calico-neutron,NeCTAR-RC/neutron,vijayendrabvs/ssl-neutron,Metaswitch/calico-neutron,chitr/neutron,swdream/neutron,javaos74/neutron,vijayendrabvs/ssl-neutron,shahbazn/neutron,leeseulstack/openstack,bigswitch/neutron,wenhuizhang/neutron,redhat-openstack/neutron,SamYaple/neutron,aristanetworks/neutron,CiscoSystems/neutron,takeshineshiro/neutron,yamahata/neutron,huntxu/neutron,klmitch/neutron,neoareslinux/neutron,netscaler/neutron,Comcast/neutron,NeCTAR-RC/neutron,virtualopensystems/neutron,jumpojoy/neutron,citrix-openstack-build/neutron,Juniper/contrail-dev-neutron,silenci/neutron,barnsnake351/neutron,alexandrucoman/vbox-neutron-agent,sasukeh/neutron,rickerc/neutron_audit,vbannai/neutron,leeseuljeong/leeseulstack_neutron,javaos74/neutron,yamahata/neutron,glove747/liberty-neutron,adelina-t/neutron,vijayendrabvs/hap,SamYaple/neutron,sajuptpm/neutron-ipam,netscaler/neutron,miyakz1192/neutron,bgxavier/neutron,aristanetworks/neutron,eonpatapon/neutron,neoareslinux/neutron,openstack/neutron,rickerc/neutron_audit,pnavarro/neutron,mattt416/neutron,eayunstack/neutron,JianyuWang/neutron,yanheven/neutron,beagles/neutron_hacking,mandeepdhami/neutron,eayunstack/neutron,waltBB/neutron_read,dims/neutron,mattt416/neutron,blueboxgroup/neutron,jacknjzhou/neutron,kaiweifan/neutron,vijayendrabvs/hap,chitr/neutron,JioCloud/neutron,vivekanand1101/neutron,mmnelemane/neutron,yamahata/neutron,sasukeh/neutron,watonyweng/neutron,rdo-management/neutron,Juniper/contrail-dev-neutron,shahbazn/neutron,yamahata/tacker,jerryz1982/neutron,JianyuWang/neutron,CiscoSystems/vespa,mahak/neutron,magic0704/neutron,rickerc/neutron_audit,pnavarro/neutron,sebrandon1/neutron,yuewko/neutron,magic0704/neutron,mahak/neutron,MaximNevrov/neutron,antonioUnina/neutron,huntxu/neutron,MaximNevrov/neutron,skyddv/neutron,silenci/neutron,vveerava/Openstack,glove747/liberty-neutron,ntt-sic/neutron,oeeagle/quantum,projectcalico/calico-neutron,dhanunjaya/neutron,cernops/neutron,netscaler/neutron,citrix-openstack-build/neutron,mmnelemane/neutron,blueboxgroup/neutron,cloudbase/neutron-virtualbox,mandeepdhami/neutron,virtualopensystems/neutron,CiscoSystems/vespa,SmartInfrastructures/neutron,CiscoSystems/neutron,openstack/neutron,leeseuljeong/leeseulstack_neutron,wenhuizhang/neutron,bgxavier/neutron,adelina-t/neutron,miyakz1192/neutron,vijayendrabvs/ssl-neutron,yamahata/tacker,kaiweifan/neutron,wolverineav/neutron,leeseulstack/openstack,cloudbase/neutron,JioCloud/neutron,beagles/neutron_hacking,ntt-sic/neutron,vveerava/Openstack,blueboxgroup/neutron,CiscoSystems/neutron,zhhf/charging,leeseulstack/openstack,gkotton/neutron,citrix-openstack-build/neutron,dhanunjaya/neutron,suneeth51/neutron,gopal1cloud/neutron,takeshineshiro/neutron,cernops/neutron,cloudbase/neutron-virtualbox,vijayendrabvs/hap,igor-toga/local-snat,infobloxopen/neutron,yanheven/neutron,apporc/neutron,openstack/neutron,vveerava/Openstack,apporc/neutron,zhhf/charging,yamahata/tacker,suneeth51/neutron,barnsnake351/neutron,yuewko/neutron,oeeagle/quantum,jumpojoy/neutron,virtualopensystems/neutron,eonpatapon/neutron,Juniper/contrail-dev-neutron,cloudbase/neutron,jacknjzhou/neutron