Remove stale NOOBJ.

Use standard clean and cleandir targets.

gnu/usr.bin/groff/devdvi/Makefile

@@ -5,10 +5,7 @@ DEVGENFILES=	generate/CompileFonts generate/Makefile generate/msam.map\
 		generate/texi.map generate/texmi.map generate/texr.map \
 		generate/texsy.map generate/textt.map generate/cork.map
 
-NOOBJ=		noobj
-
-clean cleandir:
-	rm -f DESC
+CLEANFILES+=	DESC
 
 DESC:	DESC.in
 	cat ${.CURDIR}/DESC.in >DESC

gnu/usr.bin/groff/devps/Makefile

@@ -9,10 +9,7 @@ DEVGENFILES=	generate/Makefile generate/afmname generate/dingbatsmap \
 		generate/symbolchars generate/symbolsl.afm generate/textmap
 PSFILES=	prologue symbolsl.pfa zapfdr.pfa
 
-NOOBJ=		noobj
-
-clean cleandir:
-	rm -f DESC ${PSFILES}
+CLEANFILES+=	DESC ${PSFILES}
 
 DESC: DESC.in
 	-rm -f DESC