Revert of Add pps id and sps id parsing to the h.264 depacketizer.

webrtc/common_video/h264/pps_parser.h

Index: webrtc/common_video/h264/pps_parser.h
diff --git a/webrtc/common_video/h264/pps_parser.h b/webrtc/common_video/h264/pps_parser.h
index c84f2102782e09a443f812e4e2b99768d148228c..f91b65d932f04e3493254c6bafe391c24179f675 100644
--- a/webrtc/common_video/h264/pps_parser.h
+++ b/webrtc/common_video/h264/pps_parser.h
@@ -33,15 +33,10 @@
     uint32_t weighted_bipred_idc = false;
     uint32_t redundant_pic_cnt_present_flag = 0;
     int pic_init_qp_minus26 = 0;
-    uint32_t id = 0;
-    uint32_t sps_id = 0;
   };
 
   // Unpack RBSP and parse PPS state from the supplied buffer.
   static rtc::Optional<PpsState> ParsePps(const uint8_t* data, size_t length);
-
-  static rtc::Optional<uint32_t> ParsePpsIdFromSlice(const uint8_t* data,
-                                                     size_t length);
 
  protected:
   // Parse the PPS state, for a bit buffer where RBSP decoding has already been