Remove old Lux

Author: avik-pal

docs/Project.toml

@@ -49,7 +49,7 @@ Documenter = "1"
 Flux = "0.14"
 ForwardDiff = "0.10"
 IterTools = "1"
-Lux = "0.4.34, 0.5"
+Lux = "0.5.5"
 MLDataUtils = "0.5"
 MLDatasets = "0.7"
 Optimisers = "0.2, 0.3"