The phrase "irrelevant things" refers to information or details that are not important or don't have any significance in a particular situation. Full definition
I spend a lot of time focusing on irrelevant things, and not a lot of time typing. (educationworld.com)
Totally irrelevant thing to say, it's football. (justarsenal.com)
The hiring manager who will read your resume will know that you do not have experience and will not expect to see long lists of irrelevant things that you have done. (coverlettersandresume.com)