Revert "Desktop, Mobile: Add support for media player for video and audio files"

Reverted as it now attempts to render note links as images. See:

https://discourse.joplinapp.org/t/joplin-for-windows-1-0-234-bug/10558?u=laurent

This reverts commit 13280ce1b3.

ReactNativeClient/lib/joplin-renderer/MdToHtml.js

@@ -17,7 +17,6 @@ const rules = {
 	code_inline: require('./MdToHtml/rules/code_inline'),
 	fountain: require('./MdToHtml/rules/fountain'),
 	mermaid: require('./MdToHtml/rules/mermaid').default,
-	media: require('./MdToHtml/rules/media').default,
 };
 
 const setupLinkify = require('./MdToHtml/setupLinkify');