Remove unused friend declaration from ParsedRtcEventLog.
Remove unused friend declaration from ParsedRtcEventLog.

Bug: NONE
Change-Id: I987f13807a7aece16e88e9ff1c5b443b0213c488
Reviewed-on: https://webrtc-review.googlesource.com/c/118181
Reviewed-by: Björn Terelius <efeae16329b3cb4ac5daf80d4bfda3344c027db3@webrtc.org>
Commit-Queue: Zach Stein <d217dcfaf7ca6751b8212d4ba07cd308222c32d1@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26310}
ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc