Merge pull request #414 from JuliaArrays/qr

More qr_instance fixes

Author: ChrisRackauckas

src/ArrayInterface.jl

@@ -573,11 +573,7 @@ Returns an instance of the QR factorization object with the correct type
 cheaply.
 """
 function qr_instance(A::Matrix{T}) where {T}
-    if VERSION >= v"1.9"
-        LinearAlgebra.QRCompactWY(zeros(T,0,0),zeros(T,0,0))
-    else
-        LinearAlgebra.QRCompactWYQ(zeros(T,0,0),zeros(T,0,0))
-    end
+    LinearAlgebra.QRCompactWY(zeros(T,0,0),zeros(T,0,0))
 end
 
 function qr_instance(A::Matrix{BigFloat})