Revert "feat: implement register Passkey user API v2 (#5873)"

This reverts commit a301c40f9f.

internal/command/command.go

@@ -32,7 +32,7 @@ type Commands struct {
 	httpClient *http.Client
 
 	checkPermission domain.PermissionCheck
-	newCode         cryptoCodeFunc
+	newEmailCode    func(ctx context.Context, filter preparation.FilterToQueryReducer, codeAlg crypto.EncryptionAlgorithm) (*CryptoCodeWithExpiry, error)
 
 	eventstore     *eventstore.Eventstore
 	static         static.Storage
@@ -109,7 +109,7 @@ func StartCommands(
 		webauthnConfig:        webAuthN,
 		httpClient:            httpClient,
 		checkPermission:       permissionCheck,
-		newCode:               newCryptoCodeWithExpiry,
+		newEmailCode:          newEmailCode,
 		sessionTokenCreator:   sessionTokenCreator(idGenerator, sessionAlg),
 		sessionTokenVerifier:  sessionTokenVerifier,
 	}
@@ -141,21 +141,11 @@ func StartCommands(
 	return repo, nil
 }
 
-type AppendReducer interface {
+func AppendAndReduce(object interface {
 	AppendEvents(...eventstore.Event)
 	// TODO: Why is it allowed to return an error here?
 	Reduce() error
-}
-
-func (c *Commands) pushAppendAndReduce(ctx context.Context, object AppendReducer, cmds ...eventstore.Command) error {
-	events, err := c.eventstore.Push(ctx, cmds...)
-	if err != nil {
-		return err
-	}
-	return AppendAndReduce(object, events...)
-}
-
-func AppendAndReduce(object AppendReducer, events ...eventstore.Event) error {
+}, events ...eventstore.Event) error {
 	object.AppendEvents(events...)
 	return object.Reduce()
 }