Duplicate line (B.6.2.1)

[kosgdk]

B.6.2.1 Using Mutable Collections Safely

import scala.collection.mutable
import scala.collection.mutable // Duplicaate line

mutable.Seq(1, 2, 3)
// res: scala.collection.mutable.Seq[Int] = ArrayBuffer(1, 2, 3)

Seq(1, 2, 3)
// res: Seq[Int] = List(1, 2, 3)

[floating-cat]

This issue has been fixed in bfe9cd9#diff-08b2e17a985cfa7e8c831d133eb51b41L56.

[davegurnell]

Thanks for the feedback!