server: remove panic

I don't know why this panic is here. If a reviewer happens to know, we
can update this to a comment. But, we should be returning this error up
the stack so that the user gets a clear error rather than a giant panic.

Epic: none
Release note: None

Author: stevendanna

pkg/server/server.go

@@ -301,9 +301,6 @@ func NewServer(cfg Config, stopper *stop.Stopper) (serverctl.ServerStartupInterf
 
 	engines, err := cfg.CreateEngines(ctx)
 	if err != nil {
-		if true {
-			panic(err)
-		}
 		return nil, errors.Wrap(err, "failed to create engines")
 	}
 	stopper.AddCloser(&engines)