unused variables

remove unused variables gcc warned about

src/monmove.c

@@ -1370,7 +1370,6 @@ undesirable_disp(mtmp, x, y)
 struct monst *mtmp;
 xchar x,y;
 {
-	struct permonst *mdat = mtmp->data;
 	boolean is_pet = (mtmp && mtmp->mtame && !mtmp->isminion);
 	struct trap *trap = t_at(x,y);
 

src/options.c

@@ -3186,7 +3186,6 @@ const char *mapping;
 {
 	struct autopickup_exception *ape, **apehead;
 	char text[256], *text2;
-	static int allocsize = 0;
 	int textsize = 0;
 	boolean grab = FALSE;