remove new parameter for CommandHandler

src/bot/handlers/command_handler.rs

@@ -12,8 +12,10 @@ pub struct MixerCommandHandler {
 }
 
 impl MixerCommandHandler {
-    pub fn new(commands: HashMap<String, Box<dyn MixerCommand>>) -> Self {
-        Self { commands }
+    pub fn new() -> Self {
+        Self {
+            commands: HashMap::new(),
+        }
     }
 
     pub fn add_command<T: MixerCommand + 'static>(&mut self, command: T) {

src/bot/mod.rs

@@ -25,7 +25,7 @@ pub struct MixerBot {
 impl MixerBot {
     pub fn new() -> Self {
         Self {
-            command_handler: MixerCommandHandler::new(HashMap::new()),
+            command_handler: MixerCommandHandler::new(),
         }
     }