refactor(bitswap) rm SetStrategy method

remove this setter while the interface is under construction

bitswap/bitswap.go

@@ -78,6 +78,7 @@ func NewSession(parent context.Context, p *peer.Peer, d ds.Datastore, r routing.
 		sender:        sender,
 		haltChan:      make(chan struct{}),
 		notifications: notifications.New(),
+		strategy:      YesManStrategy,
 	}
 	receiver.Delegate(bs)
 
@@ -242,13 +243,6 @@ func (bs *BitSwap) Halt() {
 	bs.haltChan <- struct{}{}
 }
 
-func (bs *BitSwap) SetStrategy(sf StrategyFunc) {
-	bs.strategy = sf
-	for _, ledger := range bs.partners {
-		ledger.Strategy = sf
-	}
-}
-
 func (bs *BitSwap) ReceiveMessage(
 	ctx context.Context, sender *peer.Peer, incoming bsmsg.BitSwapMessage) (
 	bsmsg.BitSwapMessage, *peer.Peer, error) {

core/core.go

@@ -109,7 +109,6 @@ func NewIpfsNode(cfg *config.Config, online bool) (*IpfsNode, error) {
 
 		// TODO(brian): pass a context to bs for its async operations
 		bitswapSession := bitswap.NewSession(context.TODO(), local, d, route)
-		bitswapSession.SetStrategy(bitswap.YesManStrategy)
 
 		// TODO(brian): pass a context to initConnections
 		go initConnections(cfg, route)