Either depending how emphatic you wish to be. "Ir" is a Latin prefix meaning "not" If I was being gently dismissive I would say "this is irrelevant," but if I wished to be more emphatic I would...
bearing upon or relating to the matter in hand
Ang "relevant " ay may katuturan sa sinasabi mo. "irrelevant"- walang katuturan.
example of relevant evidence
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