FIX: Removed CMAKE_BUILD_PARALLEL_LEVEL variable

CMakeLists.txt

@@ -28,7 +28,6 @@ if(N_CORES GREATER 1)
     set(ENV{N_CORES} ${N_CORES})
     set(ctest_test_args ${ctest_test_args} PARALLEL_LEVEL ${N_CORES})
 endif()
-set(ENV{CMAKE_BUILD_PARALLEL_LEVEL} ${CMAKE_MAKE_PROGRAM})
 message("Build will be performed on ${N_CORES} cores.")
 
 #TODO rewrite to use add_compile_definitions