Merge pull request #956 from SciML/remove-julia-19-version-checks

Remove Julia v1.9 version checks and associated AD tests

Author: ChrisRackauckas

test/runtests.jl

@@ -32,10 +32,10 @@ end
         @safetestset "Utils Tests" begin
             include("utils.jl")
         end
-        VERSION >= v"1.9" && @safetestset "AD Tests" begin
+        @safetestset "AD Tests" begin
             include("ADtests.jl")
         end
-        VERSION >= v"1.9" && @safetestset "AD Performance Regression Tests" begin
+        @safetestset "AD Performance Regression Tests" begin
             include("AD_performance_regression.jl")
         end
         @safetestset "Optimization" begin