Makefile cleanup

Makefile

@@ -9,8 +9,8 @@ SOURCES := $(addsuffix .mli,$(GLOBALS)) $(addsuffix .ml,$(GLOBALS)) \
 PRE_TARGETS := types.ml $(addsuffix .cmi,$(GLOBALS))
 LIBS := str unix
 
+# Set debugging flag to enable exception backtraces for OCAMLRUNPARAM=b
 OCAMLFLAGS := -g
-OCAMLDOCFLAGS :=
 
 OCAMLYACC := menhir
 YFLAGS := --infer --explain