Remove duplicate package from Compute.Test

Author: anton-evseev

src/ResourceManager/Compute/Commands.Compute.Test/packages.config

@@ -9,7 +9,6 @@
   <package id="Microsoft.Azure.Management.Compute" version="21.0.0" targetFramework="net452" />
   <package id="Microsoft.Azure.Management.Network" version="19.3.0-preview" targetFramework="net452" />
   <package id="Microsoft.Azure.Management.KeyVault" version="2.4.1-alpha" targetFramework="net452" />
-  <package id="Microsoft.Azure.Management.Network" version="19.3.0-preview" targetFramework="net452" />
   <package id="Microsoft.Azure.Management.Storage" version="7.1.0-preview" targetFramework="net452" />
   <package id="Microsoft.Azure.Test.Framework" version="1.0.6179.26854-prerelease" targetFramework="net45" />
   <package id="Microsoft.Azure.Test.HttpRecorder" version="1.6.7-preview" targetFramework="net45" />