[Bleeding] Check visibility API for sounds. Fixes BUKKIT-3114

With 1.4, entity sound tracking changed for the better.
Our previous method additions can now be removed.
All that's left is checking if the source can be seen
by the recipient of the sound packet. Thanks, Mojang!

src/main/java/net/minecraft/server/ServerConfigurationManagerAbstract.java

@@ -700,25 +700,15 @@ public abstract class ServerConfigurationManagerAbstract {
     }
 
     public void sendPacketNearby(double d0, double d1, double d2, double d3, int i, Packet packet) {
-        this.sendPacketNearby(d0, d1, d2, d3, i, packet, null); // CraftBukkit
+        this.sendPacketNearby((EntityHuman) null, d0, d1, d2, d3, i, packet);
     }
 
-    // CraftBukkit start - Add support for entity who caused the packet
     public void sendPacketNearby(EntityHuman entityhuman, double d0, double d1, double d2, double d3, int i, Packet packet) {
-        this.sendPacketNearby(entityhuman, d0, d1, d2, d3, i, packet, null);
-    }
-
-    public void sendPacketNearby(double d0, double d1, double d2, double d3, int i, Packet packet, Entity sourceentity) {
-        this.sendPacketNearby(null, d0, d1, d2, d3, i, packet, sourceentity);
-    }
-    // CraftBukkit end
-
-    public void sendPacketNearby(EntityHuman entityhuman, double d0, double d1, double d2, double d3, int i, Packet packet, Entity sourceentity) { // CraftBukkit - added sourceentity
         for (int j = 0; j < this.players.size(); ++j) {
             EntityPlayer entityplayer = (EntityPlayer) this.players.get(j);
 
             // CraftBukkit start - Test if player receiving packet can see the source of the packet
-            if (sourceentity != null && sourceentity instanceof EntityPlayer && !entityplayer.getBukkitEntity().canSee(((EntityPlayer)sourceentity).getBukkitEntity())) {
+            if (entityhuman != null && entityhuman instanceof EntityPlayer && !entityplayer.getBukkitEntity().canSee(((EntityPlayer) entityhuman).getBukkitEntity())) {
                 continue;
             }
             // CraftBukkit end

src/main/java/net/minecraft/server/WorldManager.java

@@ -22,12 +22,6 @@ public class WorldManager implements IWorldAccess {
         this.world.getTracker().untrackEntity(entity);
     }
 
-    // CraftBukkit start - Add source entity for a sound.
-    public void a(String s, double d0, double d1, double d2, float f, float f1, Entity sourceentity) {
-        this.server.getServerConfigurationManager().sendPacketNearby(d0, d1, d2, f > 1.0F ? (double) (16.0F * f) : 16.0D, this.world.dimension, new Packet62NamedSoundEffect(s, d0, d1, d2, f, f1), sourceentity);
-    }
-    // CraftBukkit end
-
     public void a(String s, double d0, double d1, double d2, float f, float f1) {
         // CraftBukkit - this.world.dimension
         this.server.getServerConfigurationManager().sendPacketNearby(d0, d1, d2, f > 1.0F ? (double) (16.0F * f) : 16.0D, this.world.dimension, new Packet62NamedSoundEffect(s, d0, d1, d2, f, f1));