Remove redundant stable section from os-win
Remove redundant stable section from os-win

The content of the stable section is the default, we do not need to
duplicate it here.

Change-Id: I6e53a82a9dc430102c9d195671e0da9fce54f6df

openstack-infra/project-config,Tesora/tesora-project-config,dongwenjuan/project-config,noorul/os-project-config,dongwenjuan/project-config,noorul/os-project-config,Tesora/tesora-project-config,openstack-infra/project-config