Remove redundant is_mflux weight attribute

src/mflux/dreambooth/lora_layers/lora_layers.py

@@ -58,7 +58,7 @@ class LoRALayers:
             lora_layers = {**transformer_lora_layers, **single_transformer_lora_layers}
 
             weights = WeightHandler(
-                meta_data=MetaData(is_mflux=True),
+                meta_data=MetaData(mflux_version=GeneratedImage.get_version()),
                 transformer=mlx.utils.tree_unflatten(list(lora_layers.items()))['transformer'],
             )  # fmt:off
 

src/mflux/weights/weight_handler.py

@@ -14,7 +14,6 @@ class MetaData:
     quantization_level: int | None = None
     scale: float | None = None
     is_lora: bool = False
-    is_mflux: bool = False
     mflux_version: str | None = None
 
 

src/mflux/weights/weight_handler_lora.py

@@ -38,7 +38,7 @@ class WeightHandlerLoRA:
                         quantization_level=None,
                         scale=lora_scale,
                         is_lora=True,
-                        is_mflux=True if mflux_version is not None else False,
+                        mflux_version=mflux_version,
                     ),
                 )
                 lora_weights.append(weights)