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-GameRules-to-use-LinkedHashMap.patch

@@ -6,7 +6,7 @@ Subject: [PATCH] Optimize GameRules to use LinkedHashMap
 Previously TreeMap was used which has poor get(K) performance.
 
 diff --git a/src/main/java/net/minecraft/server/GameRules.java b/src/main/java/net/minecraft/server/GameRules.java
-index 3de9d264db..c6a8004745 100644
+index 3de9d264d..c6a800474 100644
 --- a/src/main/java/net/minecraft/server/GameRules.java
 +++ b/src/main/java/net/minecraft/server/GameRules.java
 @@ -0,0 +0,0 @@ import javax.annotation.Nullable;
@@ -49,7 +49,7 @@ index 3de9d264db..c6a8004745 100644
      }
  
 diff --git a/src/test/java/org/bukkit/GameRuleTest.java b/src/test/java/org/bukkit/GameRuleTest.java
-index 1ed0f4cf2b..40edb8d668 100644
+index 1ed0f4cf2..40edb8d66 100644
 --- a/src/test/java/org/bukkit/GameRuleTest.java
 +++ b/src/test/java/org/bukkit/GameRuleTest.java
 @@ -0,0 +0,0 @@ public class GameRuleTest {