diff --git a/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java b/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java
index e9661e1916..2bc90bef02 100644
--- a/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java
+++ b/paper-api/src/main/java/org/bukkit/entity/LivingEntity.java
@@ -5,7 +5,6 @@ import java.util.List;
 
 import org.bukkit.Location;
 import org.bukkit.block.Block;
-import org.bukkit.util.Callback;
 
 /**
  * Represents a living entity, such as a monster or player
@@ -48,34 +47,6 @@ public interface LivingEntity extends Entity {
      */
     public Location getEyeLocation();
 
-    /**
-     * Gets all blocks along the player's line of sight
-     * List iterates from player's position to target inclusive
-     *
-     * @param callback Through every iteration it will call {@link Callback#call(Object)}. If set to/returns <code>null</code> only air is considered transparent.
-     * @param maxDistance This is the maximum distance to scan. This may be further limited by the server, but never to less than 100 blocks.
-     * @return List containing all blocks along the player's line of sight
-     */
-    public List<Block> getLineOfSight(Callback<Boolean, Block> callback, int maxDistance);
-
-    /**
-     * Gets the block that the player has targeted
-     *
-     * @param callback Through every iteration it will call {@link Callback#call(Object)}. If set to/returns <code>null</code> only air is considered transparent.
-     * @param maxDistance This is the maximum distance to scan. This may be further limited by the server, but never to less than 100 blocks.
-     * @return Block that the player has targeted
-     */
-    public Block getTargetBlock(Callback<Boolean, Block> callback, int maxDistance);
-
-    /**
-     * Gets the block that the player has targeted
-     *
-     * @param callback Through every iteration it will call {@link Callback#call(Object)}. If set to/returns <code>null</code> only air is considered transparent.
-     * @param maxDistance This is the maximum distance to scan. This may be further limited by the server, but never to less than 100 blocks.
-     * @return Block that the player has targeted
-     */
-    public List<Block> getLastTwoTargetBlocks(Callback<Boolean, Block> callback, int maxDistance);
-
     /**
      * Gets all blocks along the player's line of sight
      * List iterates from player's position to target inclusive
diff --git a/paper-api/src/main/java/org/bukkit/util/Callback.java b/paper-api/src/main/java/org/bukkit/util/Callback.java
deleted file mode 100644
index 8920532962..0000000000
--- a/paper-api/src/main/java/org/bukkit/util/Callback.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package org.bukkit.util;
-
-/**
- * Primitive callback class, to allow specific callback handling. For example to determine if a block in sight is invisible.
- *
- * @param <Result> This is the type it will return.
- * @param <Parameter> This is the type it has as parameter.
- */
-public interface Callback<Result, Parameter> {
-
-    /**
-     * This method will be called on each step.
-     *
-     * @param parameter The parameter of this step.
-     * @return The result of the step.
-     */
-    public Result call(Parameter parameter);
-
-}
diff --git a/paper-api/src/main/java/org/bukkit/util/TransparentCallback.java b/paper-api/src/main/java/org/bukkit/util/TransparentCallback.java
deleted file mode 100644
index 28a8f0c477..0000000000
--- a/paper-api/src/main/java/org/bukkit/util/TransparentCallback.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package org.bukkit.util;
-
-import java.util.Set;
-
-import org.bukkit.block.Block;
-
-/**
- * Default transparent call back. This class as callback acts like the normal
- * line of sight methods.
- *
- * To implement own handler override {@link TransparentCallback#call(Block)} and
- * call it via super.
- */
-public class TransparentCallback implements Callback<Boolean, Block> {
-
-    private final Set<Byte> transparent;
-
-    /**
-     * Creates a new callback class which returns by default for every block in
-     * the transparent list true. Otherwise false. Could be expanded by override
-     * the {@link Callback#call(Block)} method.
-     *
-     * @param transparent
-     *            The list of transparent blocks.
-     */
-    public TransparentCallback(Set<Byte> transparent) {
-        this.transparent = transparent;
-    }
-
-    public Boolean call(Block parameter) {
-        return this.transparent.contains((byte) parameter.getTypeId());
-    }
-
-}