Remove support for MFR Deep Storage Unit API, add StorageDrawers API

src/main/java/powercrystals/minefactoryreloaded/api/IDeepStorageUnit.java

@@ -1,25 +0,0 @@
-package powercrystals.minefactoryreloaded.api;
-
-import net.minecraft.item.ItemStack;
-
-public interface IDeepStorageUnit {
-    /**
-     * @return A populated ItemStack with stackSize for the full amount of materials in the DSU. May have a stackSize > getMaxStackSize().
-     */
-    ItemStack getStoredItemType();
-
-    /**
-     * Sets the total amount of the item currently being stored, or zero if it wants to remove all items.
-     */
-    void setStoredItemCount(int amount);
-
-    /**
-     * Sets the type of the stored item and initializes the number of stored items to amount. Will overwrite any existing stored items.
-     */
-    void setStoredItemType(ItemStack type, int amount);
-
-    /**
-     * @return The maximum number of items the DSU can hold.
-     */
-    int getMaxStoredCount();
-}