Removed fixed issue from TODO list

README.md

@@ -18,6 +18,4 @@ The Makefile uses [OCamlMakefile(https://bitbucket.org/mmottl/ocaml-makefile/).
 Issues & TODO
 -------------
 
-- Typechecking gives an error when integers are not in the 32-bit range. Is
-  this correct?
 - Replace VarDec with Var_dec etc? (to adhere to the coding style)