Blacklist "build/c++11" cpplint filter.
Blacklist "build/c++11" cpplint filter.

This CL removes "build/c++11" from the cpplint filters. The same was
changed in "depot_tools" in https://codereview.chromium.org/1573663003/

From the other CL:
-----
The checks are not reliable for Rvalue references, and only are
allowing default/deleted constructors. They are based on the google3
internal rules which do not exactly match our own c++11 rules, and
may diverge more over time.
-----

NOTRY=True

Review URL: https://codereview.webrtc.org/1710293002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#11678}

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