Improve code coverage

Author: adrhill

src/compat.jl

@@ -9,10 +9,4 @@ if VERSION < v"1.7.0-DEV.793"
     end
 
     (obj::Returns)(args...; kw...) = obj.value
-    function Base.show(io::IO, obj::Returns)
-        show(io, typeof(obj))
-        print(io, "(")
-        show(io, obj.value)
-        return print(io, ")")
-    end
 end

src/utils.jl

@@ -9,29 +9,6 @@ CartesianIndex(5, 3)
 """
 drop_batch_index(C::CartesianIndex) = CartesianIndex(C.I[1:(end - 1)])
 
-"""
-    ones_like(x)
-
-Returns array of ones of same shape and type as `x`.
-
-## Example
-```julia-repl
-julia> x = rand(Float16, 2, 4, 1)
-2×4×1 Array{Float16, 3}:
-[:, :, 1] =
- 0.2148  0.9053   0.751    0.358
- 0.38    0.09033  0.04053  0.6543
-
-julia> ones_like(x)
-2×4×1 Array{Float16, 3}:
-[:, :, 1] =
- 1.0  1.0  1.0  1.0
- 1.0  1.0  1.0  1.0
-```
-"""
-ones_like(x::AbstractArray) = fill!(similar(x), 1)
-ones_like(x::Number) = oneunit(x)
-
 """
     masked_copy(A, mask)