Remove skipped models from the webpage

[ramkrishna2910]

Some models had to be skipped because they failed torch.onnx.verification .
These models have been moved under a folder called skip in each of the following folders:
https://github.com/onnx/models/tree/main/Computer_Vision/skip
https://github.com/onnx/models/tree/main/Generative_AI/skip
https://github.com/onnx/models/tree/main/Natural_Language_Processing/skip
https://github.com/onnx/models/tree/main/Graph_Machine_Learning/skip

The models under the above folders should not be displayed on the webpage

[venkatvellaichamy]

This issue has been fixed in the commit:
fe25c75