Revert breaking change (reset of project_info)

[Catalin-Roman]

Resetting the "project_info" has an undesired side-effect: doesn't allow the patch of the SW360 project for fields like (example): "linkedProjects", "moderators".

[gernot-h]

Thanks for your PR, @Catalin-Roman!

This line was seemingly added recently by @tngraf to fix some mypy warning, however, I can't reproduce the warning if removing the line.. Also resetting the value here looks indeed wrong, however I think @t-graf should have a 2nd look on it.

@Catalin-Roman, if you have time, would you be interested to add some test case to tests/test_create_project.py (using test_project_update as inspiration or just extending it to cover your use case) to assure we avoid such regressions in the future?

[Catalin-Roman]

@gernot-h I will definitely add unit tests before the PR is accepted but before I do I would love to get the confirmation from @t-graf that the changes in this PR are ok and don't interfere with other use cases. Thanks!

[tngraf]

@Catalin-Roman Sorry for the inconvenience.