More compile fixes

- Re-removes Bukkit#getServerName - This was (hopefully?) only added back
  for Timings v2. It should be kept in that scope.

- Intend to let PlayerViewDistance API slip. Given the scope of the
  changes in this area it seems best to let this slip past initial
  release. It can be re-added when there is additional time to focus on it
  and the changed systems it relies on. If it is fixed prior to release
  this is implemented as a single shim patch that can be dropped.

Spigot-Server-Patches/Optimize-RegistryMaterials.patch

@@ -8,7 +8,7 @@ Use larger initial sizes to increase bucket capacity on the BiMap
 BiMap.get was seen to be using a good bit of CPU time.
 
 diff --git a/src/main/java/net/minecraft/server/RegistryMaterials.java b/src/main/java/net/minecraft/server/RegistryMaterials.java
-index f291e05b26..860924f9b0 100644
+index f291e05b2..fed38e6ef 100644
 --- a/src/main/java/net/minecraft/server/RegistryMaterials.java
 +++ b/src/main/java/net/minecraft/server/RegistryMaterials.java
 @@ -0,0 +0,0 @@ import org.apache.logging.log4j.Logger;
@@ -29,7 +29,7 @@ index f291e05b26..860924f9b0 100644
              }
  
 -            this.d = collection.toArray(new Object[collection.size()]);
-+            this.d = (V[]) collection.toArray(new Object[collection.size()]); // Paper - Decompile fix
++            this.d = (T[]) collection.toArray(new Object[collection.size()]); // Paper - Decompile fix
          }
  
          return this.d[random.nextInt(this.d.length)];