ARM: OMAP4: hwmod: drop extra cpu_is check from _wait_target_disable()

_omap4_wait_target_disable() is called only from inside _omap4_disable_module()
which is already protected by SoC specific checks.  Remove the cpu_is check
here.
Signed-off-by: NKevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/omap_hwmod.c

@@ -823,9 +823,6 @@ static void _omap4_enable_module(struct omap_hwmod *oh)
  */
 static int _omap4_wait_target_disable(struct omap_hwmod *oh)
 {
-	if (!cpu_is_omap44xx())
-		return 0;
-
 	if (!oh)
 		return -EINVAL;