api: remove projectile getInteracting

This is unused currently and is being abused by some hacked clients.

runelite-mixins/src/main/java/net/runelite/mixins/RSProjectileMixin.java

@@ -24,7 +24,6 @@
  */
 package net.runelite.mixins;
 
-import net.runelite.api.Actor;
 import net.runelite.api.coords.LocalPoint;
 import net.runelite.api.events.ProjectileMoved;
 import net.runelite.api.mixins.Inject;
@@ -32,8 +31,6 @@ import net.runelite.api.mixins.MethodHook;
 import net.runelite.api.mixins.Mixin;
 import net.runelite.api.mixins.Shadow;
 import net.runelite.rs.api.RSClient;
-import net.runelite.rs.api.RSNPC;
-import net.runelite.rs.api.RSPlayer;
 import net.runelite.rs.api.RSProjectile;
 
 @Mixin(RSProjectile.class)
@@ -51,36 +48,6 @@ public abstract class RSProjectileMixin implements RSProjectile
 		return getEndCycle() - currentGameCycle;
 	}
 
-	@Inject
-	@Override
-	public Actor getInteracting()
-	{
-		int interactingIndex = getRsInteracting();
-		if (interactingIndex == 0)
-		{
-			return null;
-		}
-
-		if (interactingIndex > 0)
-		{
-			int idx = interactingIndex - 1;
-			RSNPC[] npcs = client.getCachedNPCs();
-			return npcs[idx];
-		}
-		else
-		{
-			int idx = -interactingIndex - 1;
-
-			if (idx == client.getLocalInteractingIndex())
-			{
-				return client.getLocalPlayer();
-			}
-
-			RSPlayer[] players = client.getCachedPlayers();
-			return players[idx];
-		}
-	}
-
 	/**
 	 * Called when a projectile is set to move towards a point. For
 	 * projectiles that target the ground, like AoE projectiles from