ARM: dts: omap3: Remove all references to ti,codec property

ti,codec property is not used (parsed) in omap-twl4030 driver. The ti,twl4030-audio
which ti,codec points by phandle is mfd driver and device for ASoC codec is created
w/o DT compatible string. Removing all references in DT files.

Signed-off-by: Marek Belisko <marek@goldelico.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>