chore(Mathlib/LinearAlgebra/Matrix/Kronecker.lean): automated extraction (leanprover-community#36136)

This PR was automatically created from PR leanprover-community#35233 by @kim-em via a [review comment](leanprover-community#35233 (comment)) by @Vierkantor.

Co-authored-by: kim-em <477956+kim-em@users.noreply.github.com>

Author: mathlib-splicebot[bot]

Mathlib/LinearAlgebra/Matrix/Kronecker.lean

@@ -5,7 +5,6 @@ Authors: Filippo A. E. Nuccio, Eric Wieser
 -/
 module
 
-public import Mathlib.GroupTheory.GroupAction.Ring
 public import Mathlib.LinearAlgebra.Matrix.Determinant.Basic
 public import Mathlib.LinearAlgebra.Matrix.Trace
 public import Mathlib.RingTheory.TensorProduct.Basic