media: atomisp: Remove duplicate atomisp_[start|stop]_streaming() prototypes

atomisp_ioctl.h contains the atomisp_[start|stop]_streaming() function
prototypes 2 times. Drop one of the copies of the prototypes.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_ioctl.h

@@ -53,7 +53,4 @@ unsigned int atomisp_streaming_count(struct atomisp_device *isp);
 long atomisp_compat_ioctl32(struct file *file,
 			    unsigned int cmd, unsigned long arg);
 
-int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count);
-void atomisp_stop_streaming(struct vb2_queue *vq);
-
 #endif /* __ATOMISP_IOCTL_H__ */