remove julia version test badges

Author: mauriciogtec

README.md

@@ -1,7 +1,4 @@
 [![Build Status](https://travis-ci.org/mauriciogtec/AdaptiveRejectionSampling.jl.svg?branch=master)](https://travis-ci.org/mauriciogtec/AdaptiveRejectionSampling.jl)
-[![AdaptiveRejectionSampling](http://pkg.julialang.org/badges/AdaptiveRejectionSampling_0.7.svg)](http://pkg.julialang.org/detail/AdaptiveRejectionSampling)
-[![AdaptiveRejectionSampling](http://pkg.julialang.org/badges/AdaptiveRejectionSampling_1.0.svg)](http://pkg.julialang.org/detail/AdaptiveRejectionSampling)
-
 [![Coverage Status](https://coveralls.io/repos/github/mauriciogtec/AdaptiveRejectionSampling.jl/badge.svg?branch=master)](https://coveralls.io/github/mauriciogtec/AdaptiveRejectionSampling.jl?branch=master)
 [![codecov](https://codecov.io/gh/mauriciogtec/AdaptiveRejectionSampling.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/mauriciogtec/AdaptiveRejectionSampling.jl)