xbmc: clean up rss
- remove rss sed hack from xbmc-setup
- I dont care at which settings level rss is
- drop unused OE rss feeds patch. rss is permanently disabled here
xbmc.service: cosmetics
ncurses: meh some segv fuckery

in dialog on exit:
*** Error in `dialog': munmap_chunk(): invalid pointer: 0x00007f3cd1d84650 ***

this shit probably breaks other stuff, zero fucks given as long installer works!