feat(mge): do not export F.nn.embedding

GitOrigin-RevId: eb90506535e19f09a30bcf6ed9ba5a56653281a6

imperative/python/megengine/functional/nn.py

@@ -35,7 +35,6 @@ __all__ = [
     "conv_transpose2d",
     "dot",
     "dropout",
-    "embedding",
     "indexing_one_hot",
     "interpolate",
     "leaky_relu",

imperative/python/megengine/module/embedding.py

@@ -10,7 +10,7 @@ from typing import Optional
 
 import numpy as np
 
-from ..functional import embedding as embedding_func
+from ..functional.nn import embedding as embedding_func
 from ..tensor import Parameter
 from . import init
 from .module import Module