Update PRESUBMIT.py for webrtc/{tools => rtc_tools} rename.
Update PRESUBMIT.py for webrtc/{tools => rtc_tools} rename.

In https://codereview.webrtc.org/2965593002/ the directory
was changed but presubmits were bypassed.

BUG=webrtc:7855
NOTRY=True
NOPRESUBMIT=True
TBR=kwiberg@webrtc.org

Review-Url: https://codereview.webrtc.org/2970513002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#18851}

ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc