do not enforce c++ standard

v4hn · v4hn · commit cf79c874dc0d · 2022-10-05T15:14:16.000+02:00
log4cxx requires c++17 and forcing an older standard makes it break.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,9 +1,6 @@
 cmake_minimum_required(VERSION 3.1.3)
 project(moveit_tutorials)
 
-set(CMAKE_CXX_STANDARD 14)
-set(CMAKE_CXX_EXTENSIONS OFF)
-
 find_package(catkin REQUIRED
   COMPONENTS
     interactive_markers
