[4] Remove unused com_media field "upload_mime_illegal"

[joomlapl-bot]

PR w związku ze zmianą oryginału https://github.com/joomla/joomla-cms/pull/39453 Poniżej zmiany w oryginale:

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```diff diff --git a/administrator/components/com_media/config.xml b/administrator/components/com_media/config.xml index bd43e97d52b0..1fa279907b1e 100644 --- a/administrator/components/com_media/config.xml +++ b/administrator/components/com_media/config.xml @@ -119,15 +119,6 @@ default="image/jpeg,image/gif,image/png,image/bmp,image/webp,audio/ogg,audio/mpeg,audio/mp4,video/mp4,video/mpeg,video/quicktime,video/webm,application/msword,application/excel,application/pdf,application/powerpoint,text/plain,application/x-zip" showon="restrict_uploads:1" /> - -