remove googViewLimitedResolution stat

adaptReason in webrtcvideoengine2.h only defines NONE=0, CPU=1 and BANDWIDTH=2 so &0x4 can not happen anymore.
This was probably never implemented in videoengine2

BUG=webrtc:6870

Review-Url: https://codereview.webrtc.org/1887773002
Cr-Commit-Position: refs/heads/master@{#15546}
diff --git a/AUTHORS b/AUTHORS
index 379c4f3..bd7d39f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -26,6 +26,7 @@
 Maxim Potapov <vopatop.skam@gmail.com>
 Pali Rohar
 Paul Kapustin <pkapustin@gmail.com>
+Philipp Hancke <philipp.hancke@googlemail.com>
 Rafael Lopez Diez <rafalopezdiez@gmail.com>
 Ralph Giles <giles@ghostscript.com>
 Riku Voipio <riku.voipio@linaro.org>