Revert "Added the ability to register commands dynamically."

This reverts commit 737d6347b1d74e13191df7c521d8db30fa174c9b.
Because this is *NOT* how it should be.

By: Erik Broes <erikbroes@grum.nl>

paper-api/src/main/java/org/bukkit/command/PluginCommandYamlParser.java

@@ -0,0 +1,62 @@
+package org.bukkit.command;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.bukkit.plugin.Plugin;
+
+public class PluginCommandYamlParser {
+
+    @SuppressWarnings("unchecked")
+    public static List<Command> parse(Plugin plugin) {
+        List<Command> pluginCmds = new ArrayList<Command>();
+        Object object = plugin.getDescription().getCommands();
+
+        if (object == null) {
+            return pluginCmds;
+        }
+
+        Map<String, Map<String, Object>> map = (Map<String, Map<String, Object>>) object;
+
+        if (map != null) {
+            for (Entry<String, Map<String, Object>> entry : map.entrySet()) {
+                Command newCmd = new PluginCommand(entry.getKey(), plugin);
+                Object description = entry.getValue().get("description");
+                Object usage = entry.getValue().get("usage");
+                Object aliases = entry.getValue().get("aliases");
+                Object permission = entry.getValue().get("permission");
+
+                if (description != null) {
+                    newCmd.setDescription(description.toString());
+                }
+
+                if (usage != null) {
+                    newCmd.setUsage(usage.toString());
+                }
+
+                if (aliases != null) {
+                    List<String> aliasList = new ArrayList<String>();
+
+                    if (aliases instanceof List) {
+                        for (Object o : (List<Object>) aliases) {
+                            aliasList.add(o.toString());
+                        }
+                    } else {
+                        aliasList.add(aliases.toString());
+                    }
+
+                    newCmd.setAliases(aliasList);
+                }
+
+                if (permission != null) {
+                    newCmd.setPermission(permission.toString());
+                }
+
+                pluginCmds.add(newCmd);
+            }
+        }
+        return pluginCmds;
+    }
+}