remove broken pkgeval badge

Author: KristofferC

README.md

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 [![Build Status](https://travis-ci.org/JuliaStats/Distances.jl.svg?branch=master)](https://travis-ci.org/JuliaStats/Distances.jl)
 [![Coverage Status](https://coveralls.io/repos/JuliaStats/Distances.jl/badge.svg?branch=master&service=github)](https://coveralls.io/github/JuliaStats/Distances.jl?branch=master)
 
-[![Distances](http://pkg.julialang.org/badges/Distances_0.6.svg)](http://pkg.julialang.org/?pkg=Distances)
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 A Julia package for evaluating distances(metrics) between vectors.
 
 This package also provides optimized functions to compute column-wise and pairwise distances, which are often substantially faster than a straightforward loop implementation. (See the benchmark section below for details).