8 methods override StorageInterface::delete()

CachedStorage::delete in core/lib/Drupal/Core/Config/CachedStorage.php
DatabaseStorage::delete in core/lib/Drupal/Core/Config/DatabaseStorage.php
Implements Drupal\Core\Config\StorageInterface::delete().
FileStorage::delete in core/lib/Drupal/Core/Config/FileStorage.php
ManagedStorage::delete in core/lib/Drupal/Core/Config/ManagedStorage.php
MemoryStorage::delete in core/lib/Drupal/Core/Config/MemoryStorage.php
NullStorage::delete in core/lib/Drupal/Core/Config/NullStorage.php
ReadOnlyStorage::delete in core/lib/Drupal/Core/Config/ReadOnlyStorage.php
StorageReplaceDataWrapper::delete in core/modules/config/src/StorageReplaceDataWrapper.php

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