Mark Hoeber 9a3bee90b1 Delete unused problem doc files ...

These are used only in edx-documentation repo now

2015-01-04 20:17:46 -05:00

..

browsers.rst

Overview and configuration for cohorts feature

2014-10-03 17:39:05 -04:00

preface.rst

Corrected link to Developer's guide

2014-10-30 12:23:10 -04:00