fix: Deduplicate error messages (#1557)

Fixes https://github.com/IntellectualSites/FastAsyncWorldEdit/issues/1535

worldedit-core/src/main/java/com/sk89q/worldedit/command/ChunkCommands.java

@@ -114,8 +114,6 @@ public class ChunkCommands {
                         TextComponent.of(actor.getName())
                 )
         );
-        actor.print(new ChunkListPaginationBox(region).create(page));
-        actor.print(Caption.of("worldedit.listchunks.listfor", TextComponent.of(actor.getName())));
     }
 
     @Command(

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformCommandManager.java

@@ -769,13 +769,6 @@ public final class PlatformCommandManager {
         } catch (FaweException e) {
             actor.print(Caption.of("fawe.cancel.reason", e.getComponent()));
         } catch (UsageException e) {
-            ImmutableList<Command> cmd = e.getCommands();
-            if (!cmd.isEmpty()) {
-                actor.print(Caption.of(
-                        "fawe.error.command.syntax",
-                        HelpGenerator.create(e.getCommandParseResult()).getFullHelp()
-                ));
-            }
             actor.printError(e.getRichMessage());
         } catch (CommandExecutionException e) {
             handleUnknownException(actor, e.getCause());