Revert "+ c/c++ version"

This reverts commit 1f968bb.

Author: SysRay

tests/CMakeLists.txt

@@ -11,9 +11,6 @@ set(CPPUTEST_STD_C_LIB_DISABLED OFF CACHE BOOL "")
 set(CPPUTEST_STD_CPP_LIB_DISABLED OFF CACHE BOOL "")
 set(CPPUTEST_BUILD_TESTING OFF CACHE BOOL "")
 
-set(CMAKE_C_STANDARD 17)
-set(CMAKE_CXX_STANDARD 20)
-
 FetchContent_Declare(
   CppUTest
   GIT_REPOSITORY https://github.com/cpputest/cpputest.git