Removed superfluous IAEStack methods

src/api/java/appeng/api/storage/data/IAEStack.java

@@ -179,17 +179,7 @@ public interface IAEStack<T extends IAEStack<T>> {
     T empty();
 
     /**
-     * @return true if the stack is a {@link IAEItemStack}
+     * @return The {@link IStorageChannel} backing this stack.
-     */
-    boolean isItem();
-
-    /**
-     * @return true if the stack is a {@link IAEFluidStack}
-     */
-    boolean isFluid();
-
-    /**
-     * @return ITEM or FLUID
      */
     IStorageChannel<T> getChannel();
 

src/main/java/appeng/fluids/util/AEFluidStack.java

@@ -152,16 +152,6 @@ public final class AEFluidStack extends AEStack<IAEFluidStack> implements IAEFlu
         return dup;
     }
 
-    @Override
-    public boolean isItem() {
-        return false;
-    }
-
-    @Override
-    public boolean isFluid() {
-        return true;
-    }
-
     @Override
     public IStorageChannel<IAEFluidStack> getChannel() {
         return AEApi.instance().storage().getStorageChannel(IFluidStorageChannel.class);

src/main/java/appeng/util/item/AEItemStack.java

@@ -152,16 +152,6 @@ public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemS
         return new AEItemStack(this);
     }
 
-    @Override
-    public boolean isItem() {
-        return true;
-    }
-
-    @Override
-    public boolean isFluid() {
-        return false;
-    }
-
     @Override
     public IStorageChannel<IAEItemStack> getChannel() {
         return AEApi.instance().storage().getStorageChannel(IItemStorageChannel.class);