optimized raw items, remove unused refs

src/items/Item.java

@@ -73,6 +73,10 @@ public abstract class Item {
         return recipe;
     }
 
+    protected void setIsRaw() {
+        isRaw = true;
+    }
+
     @Override
     public String toString() {
         return "Item{" +

src/items/type/Fluid.java

@@ -3,8 +3,6 @@ package items.type;
 import items.Item;
 import items.Recipe;
 
-import java.util.Set;
-
 public abstract class Fluid extends Item {
 
     public Fluid(String name, Recipe... recipes) {

src/items/type/Ingot.java

@@ -3,8 +3,6 @@ package items.type;
 import items.Item;
 import items.Recipe;
 
-import java.util.Set;
-
 public class Ingot extends Item {
 
     public Ingot(String name, Recipe... recipes) {

src/items/type/Ore.java

@@ -3,8 +3,6 @@ package items.type;
 import items.Item;
 import items.Recipe;
 
-import java.util.Set;
-
 public class Ore extends Item {
 
     public Ore(String name, Recipe... recipes) {
@@ -17,7 +15,4 @@ public class Ore extends Item {
         setIsRaw();
     }
 
-    private void setIsRaw() {
-        isRaw = true;
-    }
 }

src/items/type/Part.java

@@ -3,8 +3,6 @@ package items.type;
 import items.Item;
 import items.Recipe;
 
-import java.util.Set;
-
 public class Part extends Item {
 
     public Part(String name, Recipe... recipes) {

src/items/type/Pickup.java

@@ -3,15 +3,15 @@ package items.type;
 import items.Item;
 import items.Recipe;
 
-import java.util.Set;
-
 public class Pickup extends Item {
 
     public Pickup(String name, Recipe... recipes) {
         super(name, recipes);
+        setIsRaw();
     }
 
     public Pickup(String name) {
         super(name);
+        setIsRaw();
     }
 }

src/items/type/ProcessedFluid.java

@@ -2,8 +2,6 @@ package items.type;
 
 import items.Recipe;
 
-import java.util.Set;
-
 public class ProcessedFluid extends Fluid {
 
     public ProcessedFluid(String name, Recipe... recipes) {

src/items/type/RawFluid.java

@@ -2,8 +2,6 @@ package items.type;
 
 import items.Recipe;
 
-import java.util.Set;
-
 public class RawFluid extends Fluid {
 
     public RawFluid(String name, Recipe... recipes) {
@@ -15,8 +13,4 @@ public class RawFluid extends Fluid {
         super(name);
         setIsRaw();
     }
-
-    private void setIsRaw() {
-        isRaw = true;
-    }
 }

src/items/type/Tool.java

@@ -3,8 +3,6 @@ package items.type;
 import items.Item;
 import items.Recipe;
 
-import java.util.Set;
-
 public class Tool extends Item {
 
     public Tool(String name, Recipe... recipes) {