Undo arg check in 1993/plummer

As part of redefining INABIAF the check for args was removed. Instead
it's warned about in the Makefile and README.md file.

1993/plummer/plummer.c

@@ -1 +1 @@
-char*_,*O;main(S,l)char**l;{if(S>2){*(O=*(l+++S-1)-1)=13,*l[1]=0;for(;;)for(printf(*l),_=O-1;_>=*l&&++*_>(S+*O+S)*S;*_--=(S+*O)*S);}}
+char*_,*O;main(S,l)char**l;{*(O=*(l+++S-1)-1)=13,*l[1]=0;for(;;)for(printf(*l),_=O-1;_>=*l&&++*_>(S+*O+S)*S;*_--=(S+*O)*S);}