remove FD and CRTestUtils from deps

Author: matbesancon

Project.toml

@@ -4,7 +4,6 @@ version = "0.7.40"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
-ChainRulesTestUtils = "cdddcdb0-9152-4a09-a978-84456f9df70a"
 Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
@@ -14,9 +13,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
 ChainRulesCore = "0.9.21"
-ChainRulesTestUtils = "0.5.5"
 Compat = "3"
-FiniteDifferences = "0.11.4"
 Reexport = "0.2"
 Requires = "0.5.2, 1"
 julia = "1"