Removed old rendering system

Removed old rendering system. Some parts may be left over, but they
won't affect testing.
1.10-R todo tag marks things to do with rendering.

src/main/java/appeng/integration/abstraction/IBuildCraftTransport.java

@@ -29,7 +29,6 @@ import net.minecraft.util.EnumFacing;
 
 import appeng.api.parts.IFacadePart;
 import appeng.api.util.AEPartLocation;
-import appeng.api.util.IAESprite;
 
 
 /**
@@ -84,13 +83,6 @@ public interface IBuildCraftTransport
 	@Nullable
 	ItemStack getTextureForFacade( @Nonnull ItemStack facade );
 
-	/**
-	 * @return texture of buildcraft cobblestone structure pipe or null if something bad happens
-	 * //
-	 */
-	@Nullable
-	IAESprite getCobbleStructurePipeTexture();
-
 	/**
 	 * @param te the to be checked {@link TileEntity}
 	 * @param dir direction of the {@link TileEntity}