14 files declare their use of EntityDeleteForm in Drupal 9

ActionDeleteForm.php in core/modules/action/src/Form/ActionDeleteForm.php

BlockContentTypeDeleteForm.php in core/modules/block_content/src/Form/BlockContentTypeDeleteForm.php

BlockDeleteForm.php in core/modules/block/src/Form/BlockDeleteForm.php

CommentTypeDeleteForm.php in core/modules/comment/src/Form/CommentTypeDeleteForm.php

DateFormatDeleteForm.php in core/modules/system/src/Form/DateFormatDeleteForm.php

EntityDisplayModeDeleteForm.php in core/modules/field_ui/src/Form/EntityDisplayModeDeleteForm.php

FieldConfigDeleteForm.php in core/modules/field_ui/src/Form/FieldConfigDeleteForm.php

ImageStyleDeleteForm.php in core/modules/image/src/Form/ImageStyleDeleteForm.php

LanguageDeleteForm.php in core/modules/language/src/Form/LanguageDeleteForm.php

MediaTypeDeleteConfirmForm.php in core/modules/media/src/Form/MediaTypeDeleteConfirmForm.php

MenuDeleteForm.php in core/modules/menu_ui/src/Form/MenuDeleteForm.php

NodeTypeDeleteConfirm.php in core/modules/node/src/Form/NodeTypeDeleteConfirm.php

ShortcutSetDeleteForm.php in core/modules/shortcut/src/Form/ShortcutSetDeleteForm.php

VocabularyDeleteForm.php in core/modules/taxonomy/src/Form/VocabularyDeleteForm.php