[Misc]Reduce BNB static variable (#9987)

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

vllm/model_executor/models/opt.py

@@ -343,8 +343,6 @@ class OPTForCausalLM(nn.Module, SupportsPP):
     default_bitsandbytes_target_modules = [
         ".q_proj.", ".k_proj.", ".v_proj.", ".out_proj.", ".fc1.", ".fc2."
     ]
-    # in TP, these weights are partitioned along the column dimension (dim=-1)
-    column_parallel_weights_modules = [".out_proj.", ".fc2."]
 
     def __init__(
         self,