Remove unused PVR, UHD APIs

Remove unused PVR, UHD APIs

API list:
int media_pvr_get_media_count_from_db(filter_h filter, int *media_count);
int media_pvr_get_highlight(media_pvr_h pvr, bool *highlight);
int media_pvr_set_highlight(media_pvr_h pvr, bool highlight);
int media_pvr_group_foreach_media_from_db(const char *group_name, media_group_e group, filter_h filter, media_pvr_cb callback, void *user_data);
int media_pvr_set_is_local_record(const char *pvr_path, bool is_local_record);
int media_uhd_get_media_count_from_db(filter_h filter, int *media_count);
int media_uhd_get_storage_id(media_uhd_h uhd, char **storage_id);
int media_uhd_set_release_date(media_uhd_h uhd, const char *release_date);
int media_uhd_get_sub_type(media_uhd_h uhd, int *sub_type);
int media_uhd_set_sub_type(media_uhd_h uhd, int *sub_type);

Change-Id: I69d7b1d31ed9859c07ed598065da347b7cda3551
Signed-off-by: Minje Ahn <minje.ahn@samsung.com>