MIVisionX-setup.py: git submodule update not needed

[jlgreathouse]

In MIVisionX-setup.py, line 103 attempts to perform a git submodule update --init --recursive in the protobuf-3.5.2 folder. However, this folder comes from a release .zip file, rather than from a git clone. As such, it is not a git repository (it has no .git folder).

When I try to run this script, it shows the following error:
fatal: Not a git repository (or any of the parent directories): .git

It then goes on because the script does not error checking. I believe the solution here is to simply not include line 110. Thoughts?

[kiritigowda]

@jlgreathouse thanks for catching this. This line was used when the master branch of protobuf was cloned. If you have removed this line in your fork, please send me a pull request, else I can remove this line.

[kiritigowda]

PR #6 fixes this error.