fix onnx weights with mean pooling (#16)

- Revert "add onnx weights with mean pooling (#14)" (567d14d95af52e0818755dfbfa7b7f8fcad58e84)
- add onnx weights with mean pooling under different name (885bc2587b20793c8ae390ca7b23c0723af84093)

model-w-mean-pooling.onnx

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c5412c83114b16f121ddead44e2887218f16dece45efb6681dac4dd82e4f3aaa
+size 129802922

model.onnx

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:c5412c83114b16f121ddead44e2887218f16dece45efb6681dac4dd82e4f3aaa
-size 129802922
+oid sha256:974fdefe71fc9889258f569132b35acae6278874c8d09dbdf7806d23ad0b4497
+size 129809014