Issue #3261265 by andypost, longwave: Remove deprecated MimeTypeGuesser code

core/core.services.yml

core/lib/Drupal/Core/CoreServiceProvider.php

...Drupal/Core/DependencyInjection/Compiler/MimeTypePass.php

...ib/Drupal/Core/File/MimeType/ExtensionMimeTypeGuesser.php

core/lib/Drupal/Core/File/MimeType/MimeTypeGuesser.php

...ore/ProxyClass/File/MimeType/ExtensionMimeTypeGuesser.php

.../Drupal/Core/ProxyClass/File/MimeType/MimeTypeGuesser.php

...les/ckeditor5/src/Controller/CKEditor5ImageController.php

core/modules/file/file.module

core/modules/file/src/Entity/File.php

...rc/Plugin/Field/FieldFormatter/FileMediaFormatterBase.php

...ules/file/src/Plugin/rest/resource/FileUploadResource.php

core/modules/image/src/Plugin/Field/FieldType/ImageItem.php

...napi/src/Controller/TemporaryJsonapiFileFieldUploader.php

core/modules/responsive_image/responsive_image.module

core/modules/system/src/Form/ThemeSettingsForm.php