Remove the unnecessary NULL fields in global instance definition of file_operations

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

drivers/motor/foc/foc_dev.c

@@ -78,10 +78,6 @@ static const struct file_operations g_foc_fops =
   NULL,                         /* write */
   NULL,                         /* seek */
   foc_ioctl,                    /* ioctl */
-  NULL                          /* poll */
-#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
-  , NULL                        /* unlink */
-#endif
 };
 
 /* FOC callbacks from the lower-half implementation to this driver */

drivers/motor/motor.c

@@ -80,10 +80,6 @@ static const struct file_operations motor_fops =
   motor_write,                   /* write */
   NULL,                          /* seek */
   motor_ioctl,                   /* ioctl */
-  NULL                           /* poll */
-#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
-  , NULL                         /* unlink */
-#endif
 };
 
 /****************************************************************************