7 files declare their use of Feed in Feeds 8.3

CsvParserFeedFormTest.php in tests/src/Functional/Feeds/Parser/Form/CsvParserFeedFormTest.php

CsvParserTest.php in tests/src/FunctionalJavascript/Feeds/Parser/CsvParserTest.php

DeleteFeedTest.php in tests/src/Functional/Plugin/Action/DeleteFeedTest.php

FeedCreationTrait.php in tests/src/Traits/FeedCreationTrait.php

feeds.module in ./feeds.module

Feeds hook implementations.

FeedTest.php in tests/src/Kernel/Entity/FeedTest.php

UploadFetcherTest.php in tests/src/Functional/Feeds/Fetcher/UploadFetcherTest.php