Remove unnecessary synchronising

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitViaInjector.java

@@ -37,8 +37,7 @@ public class BukkitViaInjector implements ViaInjector {
                     // Inject the list
                     List wrapper = new ListWrapper((List) value) {
                         @Override
-                        public synchronized void handleAdd(Object o) {
+                        public void handleAdd(Object o) {
-                            synchronized (this) {
                             if (o instanceof ChannelFuture) {
                                 try {
                                     injectChannelFuture((ChannelFuture) o);
@@ -47,7 +46,6 @@ public class BukkitViaInjector implements ViaInjector {
                                 }
                             }
                         }
-                        }
                     };
                     injectedLists.add(new Pair<>(field, connection));
                     field.set(connection, wrapper);

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeViaInjector.java

@@ -36,8 +36,7 @@ public class SpongeViaInjector implements ViaInjector {
                     // Inject the list
                     List wrapper = new ListWrapper((List) value) {
                         @Override
-                        public synchronized void handleAdd(Object o) {
+                        public void handleAdd(Object o) {
-                            synchronized (this) {
                             if (o instanceof ChannelFuture) {
                                 try {
                                     injectChannelFuture((ChannelFuture) o);
@@ -46,7 +45,6 @@ public class SpongeViaInjector implements ViaInjector {
                                 }
                             }
                         }
-                        }
                     };
                     injectedLists.add(new Pair<>(field, connection));
                     field.set(connection, wrapper);