eja: remove an unused is_Matrix import.

diff --git a/mjo/eja/eja_algebra.py b/mjo/eja/eja_algebra.py
index 02ed966540132c07af408a1a9fb4e6eebc220c31..e24b34890b48a5605184215af7675624e229d7d8 100644 (file)
--- a/mjo/eja/eja_algebra.py
+++ b/mjo/eja/eja_algebra.py
@@ -21,7 +21,6 @@ from sage.rings.number_field.number_field import NumberField, QuadraticField
 from sage.rings.polynomial.polynomial_ring_constructor import PolynomialRing
 from sage.rings.rational_field import QQ
 from sage.rings.real_lazy import CLF, RLF
-from sage.structure.element import is_Matrix
 
 from mjo.eja.eja_element import FiniteDimensionalEuclideanJordanAlgebraElement
 from mjo.eja.eja_utils import _mat2vec