Remove unncessary cmake policy definitions

CMakeLists.txt

@@ -1,9 +1,5 @@
 cmake_minimum_required (VERSION 3.10)
 
-cmake_policy(SET CMP0054 NEW)
-cmake_policy(SET CMP0042 NEW)
-cmake_policy(SET CMP0067 NEW)
-
 # OpenGL VND policy : use the old definition for now, until we can audit this
 if(POLICY CMP0072)
   cmake_policy(SET CMP0072 OLD)
@@ -13,7 +9,6 @@ if(POLICY CMP0093)
   cmake_policy(SET CMP0093 NEW)
 endif()
 
-
 message(STATUS "CMAKE Build type: ${CMAKE_BUILD_TYPE}")
 # Set a default build type if none was specified
 if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)