remove obsolete --output flag (#1146)

Signed-off-by: Jake Sanders <[email protected]>

Author: Jake Sanders

cmd/cosign/cli/options/sign.go

@@ -60,10 +60,6 @@ func (o *SignOptions) AddFlags(cmd *cobra.Command) {
 	cmd.Flags().BoolVar(&o.Upload, "upload", true,
 		"whether to upload the signature")
 
-	// TODO: remove when output flag is fully deprecated
-	cmd.Flags().StringVar(&o.Output, "output", "",
-		"write the signature to FILE")
-
 	cmd.Flags().StringVar(&o.OutputSignature, "output-signature", "",
 		"write the signature to FILE")
 

cmd/cosign/cli/sign.go

@@ -20,7 +20,6 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
 
 	"github.com/sigstore/cosign/cmd/cosign/cli/generate"
 	"github.com/sigstore/cosign/cmd/cosign/cli/options"
@@ -29,7 +28,6 @@ import (
 
 func Sign() *cobra.Command {
 	o := &options.SignOptions{}
-	viper.RegisterAlias("output", "output-signature")
 
 	cmd := &cobra.Command{
 		Use:   "sign",