build: use new CMP0111 policy

Author: alandefreitas

CMakeLists.txt

@@ -21,7 +21,6 @@ if (GENERATOR_IS_MULTI_CONFIG AND NOT CMAKE_CONFIGURATION_TYPES)
 elseif(NOT GENERATOR_IS_MULTI_CONFIG AND NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build." FORCE)
 endif()
-cmake_policy(SET CMP0111 OLD)
 project(
     MrDocs
     VERSION 0.0.3