Revert r51386, re-enabling building status.png. I believe I have

fixed the underlying problem on the web build machine that was
generating errors.

Thank you to hrs@ for disabling this until it could be investigated,
and to bjk@ for emailing admins@ about the problem.

Sponsored by:	The FreeBSD Foundation

share/tools/portsgrowth/Makefile

@@ -17,10 +17,7 @@ all:	${IMG}
 update:
 	sh getinfo.sh
 
-status.png:
-	${TOUCH} ${.TARGET}
-
-Xstatus.png:	ports.plt ports.log
+status.png:	ports.plt ports.log
 	${GNUPLOT} ports.plt
 	${PNGTOPNM} ports.png | ${PNMTOPNG} -i > ${IMG}
 	rm ports.png