Remove backwards compatibility package extension logic (#347)

* Remove unnecessary dependencies

* Remove backwards compatibility extension logic

Author: mtfishman

Project.toml

@@ -1,17 +1,13 @@
 name = "LazyArrays"
 uuid = "5078a376-72f3-5289-bfd5-ec5146d43c02"
-version = "2.2.1"
+version = "2.2.2"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
-BandedMatrices = "aae01518-5342-5314-be14-df237901396f"
-BlockArrays = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
-BlockBandedMatrices = "ffab5731-97b5-5995-9138-79e8c1846df0"
 FillArrays = "1a297f60-69ca-5386-bcde-b61e274b549b"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
-StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 
 [weakdeps]
 BandedMatrices = "aae01518-5342-5314-be14-df237901396f"

src/LazyArrays.jl

@@ -77,11 +77,4 @@ function _mulbanded_copyto! end
 abstract type AbstractLazyBandedLayout <: AbstractBandedLayout end
 struct LazyBandedLayout <: AbstractLazyBandedLayout end
 
-if !isdefined(Base, :get_extension)
-    include("../ext/LazyArraysStaticArraysExt.jl")
-    include("../ext/LazyArraysBandedMatricesExt.jl")
-    include("../ext/LazyArraysBlockArraysExt.jl")
-    include("../ext/LazyArraysBlockBandedMatricesExt.jl")
-end
-
 end # module