media: saa7134: remove unused declarations in saa7134.h

saa7134_mixer_fops and saa7134_dsp_fops have been removed
in media/video since commit 166fb6b4 ("V4L/DVB (6623):
remove saa7134-oss").

Then media/video has been renamed to media/pci since
commit b285192a ("[media] rename most media/video pci
drivers to media/pci").

saa7134_vbi_template has been removed since
commit a9622391 ("V4L/DVB (6792): Fix VBI support").

so saa7134_mixer_fops, saa7134_dsp_fops and saa7134_vbi_template
are unused declarations, remove them.
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/pci/saa7134/saa7134.h

@@ -866,7 +866,6 @@ int saa7134_ts_stop(struct saa7134_dev *dev);
 /* saa7134-vbi.c                                               */
 
 extern const struct vb2_ops saa7134_vbi_qops;
-extern struct video_device saa7134_vbi_template;
 
 int saa7134_vbi_init1(struct saa7134_dev *dev);
 int saa7134_vbi_fini(struct saa7134_dev *dev);
@@ -897,9 +896,6 @@ void saa7134_enable_i2s(struct saa7134_dev *dev);
 /* ----------------------------------------------------------- */
 /* saa7134-oss.c                                               */
 
-extern const struct file_operations saa7134_dsp_fops;
-extern const struct file_operations saa7134_mixer_fops;
-
 int saa7134_oss_init1(struct saa7134_dev *dev);
 int saa7134_oss_fini(struct saa7134_dev *dev);
 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status);