[SPIGOT-946] Begin making use of access transforms to simplify patching.

By: md_5 <git@md-5.net>

paper-server/nms-patches/TileEntityBanner.patch

@@ -1,13 +0,0 @@
---- a/net/minecraft/server/TileEntityBanner.java
-+++ b/net/minecraft/server/TileEntityBanner.java
-@@ -4,8 +4,8 @@
- 
- public class TileEntityBanner extends TileEntity {
- 
--    private int color;
--    private NBTTagList patterns;
-+    public int color; // CraftBukkit - public
-+    public NBTTagList patterns; // CraftBukkit - public
-     private boolean g;
-     private List<TileEntityBanner.EnumBannerPatternType> h;
-     private List<EnumColor> i;