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: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 634a798..2b84583 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -823,9 +823,6 @@
  */
 static int _omap4_wait_target_disable(struct omap_hwmod *oh)
 {
-	if (!cpu_is_omap44xx())
-		return 0;
-
 	if (!oh)
 		return -EINVAL;