Removes unused files from deb package.

debian/jitsi-meet.install

 *.html					/usr/share/jitsi-meet/
 *.ico					/usr/share/jitsi-meet/
 libs					/usr/share/jitsi-meet/
-service					/usr/share/jitsi-meet/
 css/all.css 			/usr/share/jitsi-meet/css/
 sounds					/usr/share/jitsi-meet/
 fonts					/usr/share/jitsi-meet/

debian/rules

 
 override_dh_install:
 	dh_installdirs
-	dh_install -X/config.js
+	dh_install -X/config.js -X/package.json