Incorporate code review comments

Author: Nilambari

src/ResourceManager/Network/Commands.Network/Commands.Network.csproj

@@ -60,9 +60,6 @@
     <Reference Include="Microsoft.Azure.Management.Network, Version=18.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\Microsoft.Azure.Management.Network.18.0.0-preview\lib\net452\Microsoft.Azure.Management.Network.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Rest.ClientRuntime, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" />
-    <Reference Include="Microsoft.Rest.ClientRuntime.Azure, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" />
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="ApplicationGateway\ApplicationGatewayBaseCmdlet.cs" />

src/ResourceManager/Network/Commands.Network/packages.config

@@ -3,7 +3,4 @@
   <package id="AutoMapper" version="6.0.2" targetFramework="net452" />
   <package id="Microsoft.Azure.KeyVault.Core" version="1.0.0" targetFramework="net45" />
   <package id="Microsoft.Azure.Management.Network" version="18.0.0-preview" targetFramework="net452" />
-  <package id="Microsoft.Rest.ClientRuntime" version="2.3.11" targetFramework="net452" />
-  <package id="Microsoft.Rest.ClientRuntime.Azure" version="3.3.12" targetFramework="net452" />
-  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net452" />
 </packages>