Revert "Merge pull request #439 from benwoo1110/fix/tab-complete-spam"

This fix has side-effects where secondary command aliases do not fully
use the commandcompletion - alternative solutions are being investigated

This reverts commit 6c8bb2620c, reversing
changes made to 01d900efd8.

core/src/main/java/co/aikar/commands/BaseCommand.java

@@ -643,9 +643,6 @@ public abstract class BaseCommand {
             final List<String> cmds = new ArrayList<>();
             if (search != null) {
                 for (RegisteredCommand<?> command : search.commands) {
-                    if (command.scope != this) {
-                        continue;
-                    }
                     cmds.addAll(completeCommand(issuer, command, search.args, commandLabel, isAsync));
                 }
             }