Remove outdated TODO comments

- Metrics tracked in #11.
- Timeout and retransmits covered in #21.
- Dependency injection doesn't make sense at this scale.
- `-1` on `GenerateKeyPair` means "this doesn't make sense for Ed25519,
  please crash if anyone ever tried to generate RSA keys".

ghstack-source-id: 8951628351
Pull Request resolved: https://github.com/certusone/wormhole/pull/66

bridge/cmd/guardiand/main.go

@@ -54,9 +54,6 @@ var (
 	rootCtxCancel context.CancelFunc
 )
 
-// TODO: prometheus metrics
-// TODO: telemetry?
-
 // "Why would anyone do this?" are famous last words.
 //
 // We already forcibly override RPC URLs and keys in dev mode to prevent security
@@ -201,8 +198,6 @@ func main() {
 
 	// Run supervisor.
 	supervisor.New(rootCtx, logger, func(ctx context.Context) error {
-		// TODO: use a dependency injection framework like wire?
-
 		if err := supervisor.Run(ctx, "p2p", p2p.Run(
 			obsvC, sendC, priv, *p2pPort, *p2pNetworkID, *p2pBootstrap, *nodeName, rootCtxCancel)); err != nil {
 			return err

bridge/cmd/guardiand/nodekeys.go

@@ -41,7 +41,6 @@ func getOrCreateNodeKey(logger *zap.Logger, path string) (p2pcrypto.PrivKey, err
 		if os.IsNotExist(err) {
 			logger.Info("No node key found, generating a new one...", zap.String("path", path))
 
-			// TODO(leo): what does -1 mean?
 			priv, _, err := p2pcrypto.GenerateKeyPair(p2pcrypto.Ed25519, -1)
 			if err != nil {
 				panic(err)

bridge/pkg/processor/processor.go

@@ -258,9 +258,6 @@ func (p *Processor) Run(ctx context.Context) error {
 			// a valid signature by an active guardian. We still don't fully trust them, as they may be
 			// byzantine, but now we know who we're dealing with.
 
-			// TODO: timeout/garbage collection for lockup state
-			// TODO: rebroadcast signatures for VAAs that fail to reach consensus
-
 			// []byte isn't hashable in a map. Paying a small extra cost for encoding for easier debugging.
 			hash := hex.EncodeToString(m.Hash)