Is it necessary to report every single finding, even if they're not relevant?
You can consider including this in your "Supporting Information", which is available in many publications. Sometimes, for the sake of presenting a coherent and concise manuscript, it may not be necessary or could even be detrimental to add portions which are orthogonal or simply irrelevant to the main line of your argument. However, by including it in the supporting information, it can still provide the necessary exposure of these findings without disrupting the flow of the paper. It can also have the additional benefit of allowing reviewers to see additional work done or preempt certain questions they may have in their review.