Submission of a part of a thesis to a conference?
It certainly doesn't look good, but it really depends on the quality of the rest of the paper.


If it's an excellent paper (clear accept), then it will probably be accepted and have a suggestion that those occurrences be removed
If it's a weak paper (clear reject) then it won't make things worse.


The problems is if it's a borderline paper. It certainly seems sloppy to leave them in, as it's a clear indicator that you did not proof read your conference version before submitting, which reflects quite negatively. So if you're already on the borderline, this could tip the balance towards reject when you would have otherwise been accepted.

That said, this is highly dependent on the reviewers, the program committee, the quality of the conference, etc.

Regardless, it's certainly not career ending: it should not have consequences beyond possible rejection from the conference.