Input: twl4030_keypad - drop unnecessary call to platform_set_drvdata

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to platform_set_drvdata().

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c
index 323a0fb..29396ca 100644
--- a/drivers/input/keyboard/twl4030_keypad.c
+++ b/drivers/input/keyboard/twl4030_keypad.c
@@ -441,7 +441,6 @@
 		return -EIO;
 	}
 
-	platform_set_drvdata(pdev, kp);
 	return 0;
 }