Khaled Mammou authored Mar 25, 2018 and David Flynn committed May 17, 2018

This commit removes the ability to control the quantization dead-zone
parameters since they have always been identical to the step size.

Rather than hard-coding the dead-zone size parameter to be the same as
the step size, this commit:

 - Sets the dead-zone to be ±(2 * stepsize / 3) rather than ±stepsize

 - Does not narrow the interval following the dead-zone.

Extracted-from: http://wg11.sc29.org/svn/repos/MPEG-I/Part5-PointCloudCompression/CE/CE0/CE0.1/trunk@1357


Reintegrated-by:  <dflynn@blackberry.com>