ARM: OMAP2+: McBSP: Remove the old iclk allow/deny idle code

The new pdata callback (force_ick_on) is now used by the driver and the old
callback related code can be removed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

include/linux/platform_data/asoc-ti-mcbsp.h

@@ -44,7 +44,6 @@ struct omap_mcbsp_platform_data {
 	/* McBSP platform and instance specific features */
 	bool has_wakeup; /* Wakeup capability */
 	bool has_ccr; /* Transceiver has configuration control registers */
-	int (*enable_st_clock)(unsigned int, bool);
 	int (*force_ick_on)(struct clk *clk, bool force_on);
 };