client/keys.generated.go: remove redundant and: x.Expiration != nil
client/keys.generated.go: remove redundant and: x.Expiration != nil

Signed-off-by: Gyu-Ho Lee <3454051ee3341eb69bdf6fca40899cdad4d86496@gmail.com>

etcd-io/etcd,joshix/etcd,rnaveiras/etcd,rnaveiras/etcd,etcd-io/etcd,coreos/etcd,vimalk78/etcd,fanminshi/etcd,rnaveiras/etcd,bdarnell/etcd,fanminshi/etcd,mkumatag/etcd,sinsharat/etcd,li-ang/etcd,xiang90/etcd,etcd-io/etcd,mkumatag/etcd,akauppi/etcd,vimalk78/etcd,glevand/coreos--etcd,lorneli/etcd,gyuho/etcd,sinsharat/etcd,xiang90/etcd,whuwxl/etcd,mqliang/etcd,ajityagaty/etcd,bluebreezecf/etcd,ajityagaty/etcd,gyuho/etcd,bluebreezecf/etcd,akauppi/etcd,dannysauer/etcd,cockroachdb/etcd,joshix/etcd,li-ang/etcd,sebrandon1/etcd,coreos/etcd,whuwxl/etcd,bdarnell/etcd,heyitsanthony/etcd,ajityagaty/etcd,sebrandon1/etcd,mqliang/etcd,heyitsanthony/etcd,cockroachdb/etcd,glevand/coreos--etcd,mkumatag/etcd,dannysauer/etcd,mqliang/etcd,lorneli/etcd