[4.3] Remove unused com_media field "upload_mime_illegal"

[jgerman-bot]

New language relevant PR in upstream repo: joomla/joomla-cms#39453 Here are the upstream changes:

Click to expand the 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"
 		/>
-
-		<field
-			name="upload_mime_illegal"
-			type="text"
-			label="COM_MEDIA_FIELD_ILLEGAL_MIME_TYPES_LABEL"
-			description="COM_MEDIA_FIELD_ILLEGAL_MIME_TYPES_DESC"
-			default="text/html"
-			showon="restrict_uploads:1"
-		/>
 	</fieldset>
 
 	<fieldset
diff --git a/administrator/language/en-GB/com_media.ini b/administrator/language/en-GB/com_media.ini
index 64c886f030a0..0b3cb6cbd7a9 100644
--- a/administrator/language/en-GB/com_media.ini
+++ b/administrator/language/en-GB/com_media.ini
@@ -42,7 +42,9 @@ COM_MEDIA_FIELD_CHECK_MIME_DESC="Use MIME Magic or Fileinfo to attempt to verify
 COM_MEDIA_FIELD_CHECK_MIME_LABEL="Check MIME Types"
 COM_MEDIA_FIELD_IGNORED_EXTENSIONS_DESC="Ignored file extensions for MIME type checking and restricted uploads."
 COM_MEDIA_FIELD_IGNORED_EXTENSIONS_LABEL="Ignored Extensions"
+; Deprecated, will be removed with 5.0
 COM_MEDIA_FIELD_ILLEGAL_MIME_TYPES_DESC="A comma separated list of forbidden MIME types to upload."
+; Deprecated, will be removed with 5.0
 COM_MEDIA_FIELD_ILLEGAL_MIME_TYPES_LABEL="Forbidden MIME Types"
 COM_MEDIA_FIELD_LEGAL_AUDIO_EXTENSIONS_DESC="Audio extensions (file types) you are allowed to upload (comma separated). These are used to check for valid audio headers."
 COM_MEDIA_FIELD_LEGAL_AUDIO_EXTENSIONS_LABEL="Legal Audio Extensions (File Types)"