fix: Chatterbox uses separate classes per variant, remove turbo

ChatterboxTTS and ChatterboxMultilingualTTS are separate classes.
Turbo variant doesn't exist in chatterbox-tts 0.1.7.
Multilingual generate() requires language_id parameter.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

kischdle/llmux/config/models.yaml

@@ -48,12 +48,6 @@ physical_models:
     estimated_vram_gb: 4
     default_language: "en"
 
-  chatterbox-turbo:
-    type: tts
-    backend: chatterbox
-    variant: "turbo"
-    estimated_vram_gb: 2
-
   chatterbox-multilingual:
     type: tts
     backend: chatterbox
@@ -110,8 +104,6 @@ virtual_models:
 
   cohere-transcribe:
     physical: cohere-transcribe
-  Chatterbox-Turbo:
-    physical: chatterbox-turbo
   Chatterbox-Multilingual:
     physical: chatterbox-multilingual
   Chatterbox: