Update and rename linear_spr_tests.py to linear_spr_test.py

Author: spcarte

tests/linear_spr_tests.py renamed to tests/linear_spr_test.py

@@ -329,4 +329,4 @@ def test_transformed_spr_inverse(rigid_ise_frfs, rigid_truth_response,
                                                 reference_transformation=force_transformation)
     transform_spr.manual_inverse(use_transformation=True)
 
-    assert np.allclose(rigid_excitation.ordinate, transform_spr.transformed_force.ordinate)
+    assert np.allclose(rigid_excitation.ordinate, transform_spr.transformed_force.ordinate)