Remove Named interface (#26913)

`Named` is implemented by every `Method` and future implementations
should implement the method too.

routers/api/packages/chef/auth.go

@@ -36,6 +36,8 @@ var (
 	algorithmPattern     = regexp.MustCompile(`algorithm=(\w+)`)
 	versionPattern       = regexp.MustCompile(`version=(\d+\.\d+)`)
 	authorizationPattern = regexp.MustCompile(`\AX-Ops-Authorization-(\d+)`)
+
+	_ auth.Method = &Auth{}
 )
 
 // Documentation:

routers/api/packages/conan/auth.go

@@ -12,6 +12,8 @@ import (
 	"code.gitea.io/gitea/services/packages"
 )
 
+var _ auth.Method = &Auth{}
+
 type Auth struct{}
 
 func (a *Auth) Name() string {

routers/api/packages/container/auth.go

@@ -12,6 +12,8 @@ import (
 	"code.gitea.io/gitea/services/packages"
 )
 
+var _ auth.Method = &Auth{}
+
 type Auth struct{}
 
 func (a *Auth) Name() string {

routers/api/packages/nuget/auth.go

@@ -13,6 +13,8 @@ import (
 	"code.gitea.io/gitea/services/auth"
 )
 
+var _ auth.Method = &Auth{}
+
 type Auth struct{}
 
 func (a *Auth) Name() string {