chore(model): remove metadata file for distilled model

The file contained metadata about the 'gte-Qwen2-7B-instruct-M2V-Distilled' model, which is no longer needed after distillation.

mteb_results/gte-Qwen2-7B-instruct-M2V-Distilled/distilled/model_meta.json

@@ -1 +0,0 @@
-{"name": "gte-Qwen2-7B-instruct-M2V-Distilled", "revision": "distilled", "release_date": null, "languages": ["eng"], "n_parameters": null, "memory_usage": null, "max_tokens": null, "embed_dim": null, "license": null, "open_source": null, "similarity_fn_name": null, "framework": [], "loader": null}