Update CMakeLists.txt

Update CMakeLists.txt

Author: Jimmy-Hu

CMakeLists.txt

@@ -130,7 +130,7 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   # using GCC
   # Note: -std=c++2b is C++23. Already handled by CMAKE_CXX_STANDARD.
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wfatal-errors -fopenmp -O3 -fdiagnostics-show-template-tree -fstats -finstrument-functions")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wfatal-errors -fopenmp -O3 -fdiagnostics-show-template-tree -fstats")
 elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
   # using Intel C++
 elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")