Extra junk at end of tvm/Dockerfile

[rgobbel]

There's a line at the end of tvm/Dockerfile that makes no sense:

ln -s /opt/mlc-llm/3rdparty/tvm/3rdparty /usr/local/lib/python3.8/dist-packages/tvm/3rdparty

It doesn't run, probably references the wrong version of Python, and finally, mlc-llm does not exist within the tvm image.

[dusty-nv]

@rgobbel this TVM dockerfile was from before MLC starting building TVM directly as a submodule, and hence has ended up somewhat orphaned/unmaintained. I'll add it to my todo list to update it, but happy to accept PR's for it in the meantime 👍