diff --git a/test/regressionmodel.jl b/test/regressionmodel.jl
index 08c6114..065ce6c 100644
--- a/test/regressionmodel.jl
+++ b/test/regressionmodel.jl
@@ -6,22 +6,6 @@ using StatsAPI: RegressionModel, crossmodelmatrix, vif
 struct MyRegressionModel <: RegressionModel
 end
 
-StatsAPI.modelmatrix(::MyRegressionModel) = [1 2; 3 4]
-StatsAPI.vcov(::MyRegressionModel) = [1 0; 0 1]
-
-struct MyRegressionModel2 <: RegressionModel
-end
-
-StatsAPI.modelmatrix(::MyRegressionModel2) = [1 2; 1 2]
-StatsAPI.vcov(::MyRegressionModel2) = [1 0; 0 1]
-
-struct MyRegressionModel3 <: RegressionModel
-end
-
-StatsAPI.modelmatrix(::MyRegressionModel3) = [1 2 3; 1 2 3]
-StatsAPI.vcov(::MyRegressionModel3) = [1 0 0; 0 1 0; 0 0 1]
-
-
 @testset "TestRegressionModel" begin
     m = MyRegressionModel()