Remove needless type definition and annotation.
Remove needless type definition and annotation.

(Also fix indentation.)
All this is in a newly-added function:
xapi_vm_lifecycle.assert_power_state_in

Signed-off-by: Thomas Sanders <c547603d2dd860735c4f0c043b1348f5c48c02f8@citrix.com>

salvocambria/xen-api,vasilenkomike/xen-api,djs55/xen-api,salvocambria/xen-api,euanh/xen-api,srowe/xen-api,Frezzle/xen-api,thomassa/xen-api,simonjbeaumont/xen-api,agimofcarmen/xen-api,srowe/xen-api,anoobs/xen-api,rafalmiel/xen-api,guard163/xen-api,djs55/xen-api,Frezzle/xen-api,anoobs/xen-api,robertbreker/xen-api,rafalmiel/xen-api,rafalmiel/xen-api,anoobs/xen-api,vasilenkomike/xen-api,robertbreker/xen-api,anoobs/xen-api,srowe/xen-api,guard163/xen-api,jjd27/xen-api,anoobs/xen-api,jjd27/xen-api,jjd27/xen-api,simonjbeaumont/xen-api,djs55/xen-api,agimofcarmen/xen-api,robertbreker/xen-api,salvocambria/xen-api,salvocambria/xen-api,simonjbeaumont/xen-api,robertbreker/xen-api,euanh/xen-api,euanh/xen-api,agimofcarmen/xen-api,euanh/xen-api,salvocambria/xen-api,salvocambria/xen-api,rafalmiel/xen-api,vasilenkomike/xen-api,agimofcarmen/xen-api,simonjbeaumont/xen-api,vasilenkomike/xen-api,thomassa/xen-api,guard163/xen-api,djs55/xen-api,guard163/xen-api,rafalmiel/xen-api,jjd27/xen-api,djs55/xen-api,agimofcarmen/xen-api,thomassa/xen-api,anoobs/xen-api,djs55/xen-api,jjd27/xen-api,agimofcarmen/xen-api,Frezzle/xen-api,srowe/xen-api,srowe/xen-api,Frezzle/xen-api,vasilenkomike/xen-api,robertbreker/xen-api,thomassa/xen-api,jjd27/xen-api,euanh/xen-api,vasilenkomike/xen-api,robertbreker/xen-api,simonjbeaumont/xen-api,thomassa/xen-api,thomassa/xen-api,euanh/xen-api,guard163/xen-api,guard163/xen-api,Frezzle/xen-api,simonjbeaumont/xen-api,rafalmiel/xen-api