Delete the unused libmmc target.

Makefile:
Mmakefile:
    Delete the libmmc target; we haven't supported building the compiler as
    a library for a number of years.

Makefile

@@ -29,10 +29,6 @@ MMAKE_SUBDIR=	MMAKE_DIR=`pwd`/../scripts ../scripts/mmake $(PARALLEL)
 all:
 	$(MMAKE) MMAKEFLAGS=$(PARALLEL) all
 
-.PHONY: libmmc
-libmmc:
-	$(MMAKE) MMAKEFLAGS=$(PARALLEL) libmmc
-
 .PHONY: install
 install:
 	$(MMAKE) MMAKEFLAGS=$(PARALLEL) DESTDIR=$(DESTDIR) install

Mmakefile

@@ -332,11 +332,6 @@ compiler: dep_compiler scripts util boehm_gc runtime library \
 		mdbcomp browser ssdb trace
 	+cd compiler && $(SUBDIR_MMAKE)
 
-.PHONY: libmmc
-libmmc: dep_compiler scripts util boehm_gc runtime library \
-		mdbcomp browser ssdb trace
-	+cd compiler && $(SUBDIR_MMAKE) libmmc
-
 .PHONY: doc
 doc: 	scripts util
 	+cd doc && $(SUBDIR_MMAKE)