Accelerators/Dax: Remove extra call to cmake_minimum_required

This directory is never used as the top-level source.

Change-Id: Id3878915df82c6e69323af625cc5d3906629faf4

Accelerators/Dax/CMakeLists.txt

@@ -13,7 +13,6 @@
 ##  the U.S. Government retains certain rights in this software.
 ##
 ##=============================================================================
-cmake_minimum_required(VERSION 2.8)
 
 #ensure we link against our dependencies
 include(module.cmake)