Fix version lookup issue in chatterbox __init__.py

- Replace dynamic version lookup with hardcoded version
- Resolves PackageNotFoundError for chatterbox-tts package

src/chatterbox/__init__.py

@@ -1,11 +1,3 @@
-try:
-    from importlib.metadata import version
-except ImportError:
-    from importlib_metadata import version  # For Python <3.8
-
-__version__ = version("chatterbox-tts")
-
-
 from .tts import ChatterboxTTS
 from .vc import ChatterboxVC
 from .mtl_tts import ChatterboxMultilingualTTS, SUPPORTED_LANGUAGES