message: Remove setting of CXX to CC
diff: @@ -60,8 +60,6 @@ CMDSTAN_VERSION := 2.17.1
  -include $(HOME)/.config/cmdstan/make.local # define local variables
  -include make/local # overwrite local variables
  -CXX = $(CC)
  -
  -include $(MATH)make/libraries
  ##
  