chore(bitswap): rm todo

exchange/bitswap/bitswap.go

@@ -147,7 +147,6 @@ func (bs *bitswap) GetBlock(parent context.Context, k u.Key) (*blocks.Block, err
 // resources, provide a context with a reasonably short deadline (ie. not one
 // that lasts throughout the lifetime of the server)
 func (bs *bitswap) GetBlocks(ctx context.Context, keys []u.Key) (<-chan *blocks.Block, error) {
-	// TODO log the request
 
 	promise := bs.notifications.Subscribe(ctx, keys...)
 	select {