The short answer: that's how research goes!
Exciting results are what everyone wants to find, but they're not exactly guaranteed. Your work would have progressed the same way, even if the results had turned out to be supremely interesting. You did the work, for a project proposal that was reviewed and accepted by your supervisor (and maybe others). That the outcome is unexciting does not invalidate the time and effort you put in.
It's not clear to me exactly how this project came to be, or what you were expected to produce. But a proper data analysis project will generally begin with a question that you want to answer, and then the output will be an answer to that question (or a precise explanation of why the question can't be answered, or is problematic to answer, etc.). Whether or not the underlying data is interesting or the results sexy isn't really at issue. That the data is so uninteresting that you are considering cancelling the whole project is a bad sign regarding how the project was conceived and carried out, but still does not render your work valueless.
A "let's see what's there" type project will come up sometimes, but you (as the analyst) should insist on specifics, like questions to be answered or goals to pursue, upfront.
Finally, while the lines blur a bit, it shouldn't be up to you to decide what is worth publishing and what is not. An analyst's role is generally to investigate, analyze, and interpret. Decisions on what to do with your work products usually belong to people further up the chain.
So, do not request that the project be cancelled. Speak with your supervisor about your work, the results, and any problems you had or limitations you faced. Your supervisor may decide not to publish, but absent a serious data issue or methodological problem (these are in your domain as an analyst) the supervisor should be making the call.