[Misc]Further reduce BNB static variable (#10597)

Signed-off-by: Jee Jee Li <pandaleefree@gmail.com>

vllm/model_executor/models/idefics3.py

@@ -656,21 +656,6 @@ class Idefics3ForConditionalGeneration(nn.Module, SupportsMultiModal,
     ]
 
     # BitandBytes specific attributes
-    default_bitsandbytes_target_modules = [
-        ".gate_proj.",
-        ".down_proj.",
-        ".up_proj.",
-        ".q_proj.",
-        ".k_proj.",
-        ".v_proj.",
-        ".o_proj.",
-        # vision_model
-        ".fc1.",
-        ".fc2.",
-        ".out_proj.",
-        # connector
-        ".proj.",
-    ]
     bitsandbytes_stacked_params_mapping = {
         # shard_name, weight_name, index
         "q_proj": ("qkv_proj", 0),