feat: api v2beta to api v2 (#8283)

# Which Problems Are Solved

The v2beta services are stable but not GA.

# How the Problems Are Solved

The v2beta services are copied to v2. The corresponding v1 and v2beta
services are deprecated.

# Additional Context

Closes #7236

---------

Co-authored-by: Elio Bischof <elio@zitadel.com>

internal/api/grpc/user/converter.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/zitadel/zitadel/internal/api/grpc/object"
 	"github.com/zitadel/zitadel/internal/domain"
-	"github.com/zitadel/zitadel/internal/eventstore/v1/models"
 	"github.com/zitadel/zitadel/internal/query"
 	user_pb "github.com/zitadel/zitadel/pkg/grpc/user"
 )
@@ -255,22 +254,6 @@ func UserAuthMethodToWebAuthNTokenPb(token *query.AuthMethod) *user_pb.WebAuthNT
 	}
 }
 
-func ExternalIDPViewsToExternalIDPs(externalIDPs []*query.IDPUserLink) []*domain.UserIDPLink {
-	idps := make([]*domain.UserIDPLink, len(externalIDPs))
-	for i, idp := range externalIDPs {
-		idps[i] = &domain.UserIDPLink{
-			ObjectRoot: models.ObjectRoot{
-				AggregateID:   idp.UserID,
-				ResourceOwner: idp.ResourceOwner,
-			},
-			IDPConfigID:    idp.IDPID,
-			ExternalUserID: idp.ProvidedUserID,
-			DisplayName:    idp.ProvidedUsername,
-		}
-	}
-	return idps
-}
-
 func TypeToPb(userType domain.UserType) user_pb.Type {
 	switch userType {
 	case domain.UserTypeHuman: