[vl] using config.json set top_k

Author: bukejiyu

fastdeploy/worker/vl_gpu_model_runner.py

@@ -237,8 +237,6 @@ def _load_model(
         fd_config.model_config.think_end_id = tokenizer.get_vocab()["</think>"]
         fd_config.model_config.max_text_id = fd_config.model_config.im_patch_id
         fd_config.model_config.sequence_parallel = False
-        # TODO (bukejiyu): Remove the assignment
-        fd_config.moe_config.top_k = 8
         self.fd_config = fd_config
         self.model_cfg = self.fd_config.model_config
         self.image_preprocess = self._init_image_preprocess(