getting rid of obsolete reference in the utils.rst; fixing comment in the hankel matrix function; and we don't need to build docs on windows, so make.bat can go

Author: pavelkomarov

docs/source/utils.rst

@@ -4,7 +4,6 @@ utils
 .. toctree::
    :maxdepth: 1
 
-   utils/_pi_cruise_control
    utils/evaluate
    utils/simulate
    utils/utility