The weapons were stored out of reach so that when Odysseus attacks the suitors, they will not be able to get their hands on any weapon and defend themselves.
Explanation:
Homer's epic narrative "The Odyssey," tells the story of the protagonist Odysseus and his return back from the Trojan War. Though the war had been over long ago, the journey that Odysseus and his men took to get back to Ithaca involves numerous encounters with both gods and men.
In book XIX, Odysseus had returned to his palace and seen the suitors and the turmoil they have created. So, he ordered his son Telemachus to get things ready so that they will execute his plan to secretly attack them while they're unprepared. He asked him to remove the weapons and armors inside, "Make some excuse when the suitors ask you why you have removed it. Say that you have taken it to be out of the way of the smoke, inasmuch as it is no longer what it was when Ulysses went away, but has become soiled and begrimed with soot. Add to this more particularly that you are afraid Jove may set them on to quarrel over their wine, and that they may do each other some harm which may disgrace both banquet and wooing, for the sight of arms sometimes tempts people to use them". This way, when they attack the suitors, they will be left helpless and not reach for any weapon to defend themselves.
