Remove lock() as well
Remove lock() as well

Again, we don't really need this currently, and since it's causing trouble
let's get rid of it until we do.

While we're at it, we let flush() return 0, since not doing so throws errors in
the user's face, and that's impolite to do without reason.

This fixes #19.

Signed-off-by: Anton Löfgren <644ec9b400317727ea69122efab4ea2fa19fba46@gmail.com>

chelmertz/spotifile,chelmertz/spotifile,chelmertz/spotifile,catharsis/spotifile,raoulh/spotifile,catharsis/spotifile,raoulh/spotifile,catharsis/spotifile,raoulh/spotifile