Delete stale test dep

Author: mtfishman

test/Project.toml

@@ -4,7 +4,6 @@ Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
 BlockArrays = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
 BlockSparseArrays = "2c9a651f-6452-4ace-a6ac-809f4280fbb4"
-DerivableInterfaces = "6c5e35bf-e59e-4898-b73c-732dcc4ba65f"
 DiagonalArrays = "74fd4be6-21e2-4f6f-823a-4360d37c7a77"
 GPUArraysCore = "46192b85-c4d5-4398-a991-12ede77f4527"
 GradedUnitRanges = "e2de450a-8a67-46c7-b59c-01d5a3d041c5"