lib/realtime: remove useless method Timespec::destroy

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
lib/realtime: fixes documentation warnings

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
lib/trees: fixes documentation warnings

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
lib/trees: fixes old init

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>
lib/ai: fixes unused local variables

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>