By Matt Hladik Ryan Lochte won 12 Olympic medals during his illustrious career, including six golds. Now, the 37-year-old swimmer is auctioning off his six silver and bronze medals for charity. The “Ryan Lochte Collection” on RR Auction will run through July 21. For Lochte, selling his non-gold medals and donating the proceeds is a better way of making use of them. “I don’t want people to think I didn’t care about the medals,” Lochte told NBC Sports Sunday. “I cherish them, but they’re just sitting in my closet collecting dust.” Lochte won silver in the 200 meter individual medley in Athens in…