You_hear already checks deafness

src/dig.c

@@ -1245,7 +1245,7 @@ register struct monst *mtmp;
 
 	if (IS_WALL(here->typ)) {
 	    /* KMH -- Okay on arboreal levels (room walls are still stone) */
-	    if (!Deaf && flags.verbose && !rn2(5))
+	    if (flags.verbose && !rn2(5))
 		You_hear("crashing rock.");
 	    if (*in_rooms(mtmp->mx, mtmp->my, SHOPBASE))
 		add_damage(mtmp->mx, mtmp->my, 0L);

src/lock.c

@@ -888,7 +888,7 @@ int x, y;
 		    else if (flags.verbose) {
 			if (cansee(x,y))
 			    pline("KABOOM!!  You see a door explode.");
-			else if (!Deaf)
+			else
 			    You_hear("a distant explosion.");
 		    }
 		    door->doormask = D_NODOOR;
@@ -901,7 +901,7 @@ int x, y;
 		if (flags.verbose) {
 		    if (cansee(x,y))
 			pline_The("door crashes open!");
-		    else if (!Deaf)
+		    else
 			You_hear("a crashing sound.");
 		}
 		unblock_point(x,y);

src/mon.c

@@ -638,7 +638,7 @@ meatmetal(mtmp)
 		    if (cansee(mtmp->mx,mtmp->my) && flags.verbose)
 			pline("%s eats %s!", Monnam(mtmp),
 				distant_name(otmp,doname));
-		    else if (!Deaf && flags.verbose)
+		    else if (flags.verbose)
 			You_hear("a crunching sound.");
 		    mtmp->meating = otmp->owt/2 + 1;
 		    /* Heal up to the object's weight in hp */
@@ -758,7 +758,7 @@ meatobj(mtmp)		/* for gelatinous cubes */
 		if (cansee(mtmp->mx,mtmp->my) && flags.verbose)
 		    pline("%s eats %s!", Monnam(mtmp),
 			    distant_name(otmp, doname));
-		else if (!Deaf && flags.verbose)
+		else if (flags.verbose)
 		    You_hear("a slurping sound.");
 		/* Heal up to the object's weight in hp */
 		if (mtmp->mhp < mtmp->mhpmax) {
@@ -803,7 +803,7 @@ meatobj(mtmp)		/* for gelatinous cubes */
 	if (ecount > 0) {
 	    if (cansee(mtmp->mx, mtmp->my) && flags.verbose && buf[0])
 		pline1(buf);
-	    else if (!Deaf && flags.verbose)
+	    else if (flags.verbose)
 		You_hear("%s slurping sound%s.",
 			ecount == 1 ? "a" : "several",
 			ecount == 1 ? "" : "s");
@@ -1642,7 +1642,7 @@ boolean was_swallowed;			/* digestion */
 				s_suffix(mdat->mname));
 			losehp(Maybe_Half_Phys(tmp), killer.name, KILLED_BY_AN);
 		    } else {
-			if (!Deaf) You_hear("an explosion.");
+			You_hear("an explosion.");
 			magr->mhp -= tmp;
 			if (magr->mhp < 1) mondied(magr);
 			if (magr->mhp < 1) { /* maybe lifesaved */
@@ -3106,7 +3106,7 @@ register boolean silent;
 			else if(!Blind)
 				You_see("%sangry guard%s approaching!",
 				  sct == 1 ? "an " : "", sct > 1 ? "s" : "");
-		} else if(!Deaf)
+		} else
 			You_hear("the shrill sound of a guard's whistle.");
 	    }
 	    return(TRUE);

src/music.c

@@ -334,7 +334,7 @@ do_pit:		    chasm = maketrap(x,y,PIT);
 			    if (!m_already_trapped) { /* suppress messages */
 			    	if(cansee(x,y))
 				    pline("%s falls into a chasm!", Monnam(mtmp));
-				else if (!Deaf && humanoid(mtmp->data))
+				else if (humanoid(mtmp->data))
 				    You_hear("a scream!");
 			    }
 			    /* Falling is okay for falling down

src/pray.c

@@ -1386,8 +1386,7 @@ verbalize("In return for thy service, I grant thee the gift of Immortality!");
 
     if (otmp->otyp == FAKE_AMULET_OF_YENDOR) {
 	    if (!highaltar && !otmp->known) goto too_soon;
-	    if (!Deaf)
-		You_hear("a nearby thunderclap.");
+	    You_hear("a nearby thunderclap.");
 	    if (!otmp->known) {
 		You("realize you have made a %s.",
 		    Hallucination ? "boo-boo" : "mistake");

src/trap.c

@@ -2062,10 +2062,9 @@ register struct monst *mtmp;
 				pline("%s stops momentarily and appears to cringe.",
 					Monnam(mtmp));
 			    }
-			} else if (!Deaf) {
+			} else
 			   You_hear("a distant %s squeak.",
 				trapnote(trap,1));
-			}
 			/* wake up nearby monsters */
 			wake_nearto(mtmp->mx, mtmp->my, 40);
 			break;
@@ -2080,9 +2079,8 @@ register struct monst *mtmp;
 				      Monnam(mtmp), a_your[trap->madeby_u]);
 				seetrap(trap);
 			    } else {
-				if((mptr == &mons[PM_OWLBEAR]
+				if(mptr == &mons[PM_OWLBEAR]
 				    || mptr == &mons[PM_BUGBEAR])
-				   && !Deaf)
 				    You_hear("the roaring of an angry bear!");
 			    }
 			} else if (force_mintrap) {
@@ -2923,9 +2921,8 @@ domagictrap()
 		if (!Blind) Your1(vision_clears);
 	  } else if (!Blind) {
 		You_see("a flash of light!");
-	  } else if (!Deaf) {
+	  } else
 		You_hear("a deafening roar!");
-	  }
 	  incr_itimeout(&HDeaf, rn1(20,30));
 	  while(cnt--)
 		(void) makemon((struct permonst *) 0, u.ux, u.uy, NO_MM_FLAGS);

src/zap.c

@@ -1790,7 +1790,7 @@ struct obj *obj, *otmp;
 		if (obj->otyp == BOULDER) {
 			if (cansee(obj->ox, obj->oy))
 				pline_The("boulder falls apart.");
-			else if (!Deaf)
+			else
 				You_hear("a crumbling sound.");
   			fracture_rock(obj);
 		}
@@ -1801,9 +1801,8 @@ struct obj *obj, *otmp;
 				pline_The("%s shatters.", rndmonnam());
 			    else 
 				pline_The("statue shatters.");
-			} else if (!Deaf) {
+			} else
 			    You_hear("a crumbling sound.");
-			}
 		    }
 		} else {
 		    if (context.mon_moving ?
@@ -3025,7 +3024,7 @@ struct obj **pobj;			/* object tossed/used, set to NULL
 			if (!Blind) pline("%s %s%s.", Yname2(obj),
 					  otense(obj, "skip"),
 					  skipcount ? " again" : "");
-			else if (!Deaf) You_hear("%s skip.", yname(obj));
+			else You_hear("%s skip.", yname(obj));
 			skipcount++;
 		} else if (skiprange_start > skiprange_end + 1) {
 			--skiprange_start;
@@ -4047,7 +4046,7 @@ short exploding_wand_typ;
 			else
 			    Norep("The water freezes.");
 			newsym(x,y);
-		    } else if(!Deaf && !lava)
+		    } else if(!lava)
 			You_hear("a crackling sound.");
 
 		    if (x == u.ux && y == u.uy) {
@@ -4214,9 +4213,8 @@ short exploding_wand_typ;
 			newsym(x, y);
 		    } else if (sense_txt) {
 			You1(sense_txt);
-		    } else if (hear_txt) {
-			if (!Deaf) You_hear1(hear_txt);
-		    }
+		    } else if (hear_txt)
+			You_hear1(hear_txt);
 		    if (picking_at(x, y)) {
 			stop_occupation();
 			reset_pick();