Fix minor warnings and debug log

src/ppu.rs

@@ -107,7 +107,7 @@ enum OamState {
     ReadTile,
     ReadAttrs,
     ReadX,
-    OverflowScan,
+    // OverflowScan,
     Wait,
 }
 
@@ -194,7 +194,7 @@ impl OAM {
                             self.state = OamState::Wait; // Should be Overflow scan...
                         }
                     }
-                    OamState::OverflowScan => todo!(),
+                    // OamState::OverflowScan => todo!(),
                     OamState::Wait => (),
                 }
             }