Remove Compat.collect(A)

Was added in #350 and #351, now obsolete as no longer required on 
minimum supported Julia version 0.6.

README.md

@@ -49,8 +49,6 @@ Please check the list below for the specific syntax you need.
 
 Currently, the `@compat` macro supports the following syntaxes:
 
-* `Compat.collect(A)` returns an `Array`, no matter what indices the array `A` has. [#21257]
-
 * `@compat foo(::CartesianRange{N})` to replace the former
   `foo(::CartesianRange{CartesianIndex{N}})` ([#20974]). Note that
   `CartesianRange` now has two type parameters, so using them as
@@ -524,7 +522,6 @@ includes this fix. Find the minimum version from there.
 [#20407]: https://github.com/JuliaLang/julia/issues/20407
 [#20974]: https://github.com/JuliaLang/julia/issues/20974
 [#21197]: https://github.com/JuliaLang/julia/issues/21197
-[#21257]: https://github.com/JuliaLang/julia/issues/21257
 [#21346]: https://github.com/JuliaLang/julia/issues/21346
 [#21709]: https://github.com/JuliaLang/julia/issues/21709
 [#22064]: https://github.com/JuliaLang/julia/issues/22064

src/Compat.jl

@@ -326,20 +326,6 @@ else
     end
 end
 
-# https://github.com/JuliaLang/julia/pull/21257
-@static if VERSION < v"0.6.0-pre.beta.28"
-    collect(A) = collect_indices(indices(A), A)
-    collect_indices(::Tuple{}, A) = copy!(Array{eltype(A)}(), A)
-    collect_indices(indsA::Tuple{Vararg{Base.OneTo}}, A) =
-        copy!(Array{eltype(A)}(map(length, indsA)), A)
-    function collect_indices(indsA, A)
-        B = Array{eltype(A)}(map(length, indsA))
-        copy!(B, CartesianRange(indices(B)), A, CartesianRange(indsA))
-    end
-else
-    const collect = Base.collect
-end
-
 # https://github.com/JuliaLang/julia/pull/21197
 if VERSION < v"0.7.0-DEV.257"
     # allow the elements of the Cmd to be accessed as an array or iterator

test/runtests.jl

@@ -508,18 +508,6 @@ using Compat: StringVector
 @test length(StringVector(5)) == 5
 @test String(fill!(StringVector(5), 0x61)) == "aaaaa"
 
-# collect
-if VERSION < v"0.7.0-"
-    # Note: This is disabled on 0.7, since the Compat.collect functionality is only
-    # applicable on 0.5, and OffsetArrays currently has some incompatibilities with
-    # 0.7. This can be reenabled later if needed.
-    using OffsetArrays
-    a = OffsetArray(1:3, -1:1)
-    b = Compat.collect(a)
-    @test indices(b) === (Base.OneTo(3),)
-    @test b == [1,2,3]
-end
-
 # PR 22064
 module Test22064
 using Compat