radio screen: Disable displaying radio art, FS#12797

With radioart enabled there appears to be buffer corruption when
the image is loaded causing the player to data abort in skin_render_line()

So, disable the code untill someone can fix it.

Change-Id: I6acf3f76ce38aa2784b1b24ed6da29a9c5bee479
Bump the plugin api version. This should have been in 212e7808.

Change-Id: I4525d62782af1ad1c0e5e92605421063b8c9b72b
Tidy up the sim x5 image by Martin Sägmüller

Change-Id: I70394e9b81964605d5af32df6dd87a8ca29c78e7