Remove IWA samples for Android platforms (#780)

Author: ZackAllen

src/Android/Xamarin.Android/ArcGISRuntime.Xamarin.Samples.Android.csproj

@@ -260,7 +260,6 @@
     <None Include="Samples\Symbology\RenderUniqueValues\RenderUniqueValues.jpg" />
     <None Include="Samples\Symbology\SimpleRenderers\SimpleRenderers.jpg" />
     <None Include="Samples\Symbology\UseDistanceCompositeSym\UseDistanceCompositeSym.jpg" />
-    <None Include="Samples\Security\IntegratedWindowsAuth\readme.md" />
   </ItemGroup>
   <ItemGroup>
     <!-- Sample Code -->
@@ -461,7 +460,6 @@
     <Compile Include="Samples\Symbology\RenderUniqueValues\RenderUniqueValues.cs" />
     <Compile Include="Samples\Symbology\SimpleRenderers\SimpleRenderers.cs" />
     <Compile Include="Samples\Symbology\UseDistanceCompositeSym\UseDistanceCompositeSym.cs" />
-    <Compile Include="Samples\Security\IntegratedWindowsAuth\IntegratedWindowsAuth.cs" />
     <Compile Include="Controls\JoystickSeekBar.cs" />
     <Compile Include="Samples\Augmented reality\NavigateAR\RouteViewerAR.cs" />
     <Compile Include="Samples\Augmented reality\NavigateAR\MslAdjustedARLocationDataSource.cs" />

src/Android/Xamarin.Android/Samples/Security/IntegratedWindowsAuth/IntegratedWindowsAuth.cs

@@ -220,7 +220,6 @@
 
 ## Security
 
-* [Integrated windows authentication](Xamarin.Android/Samples/Security/IntegratedWindowsAuth/readme.md) - Use Windows credentials to access services hosted on a portal secured with Integrated Windows Authentication (IWA).
 * [Authenticate with OAuth](Xamarin.Android/Samples/Security/OAuth/readme.md) - This sample demonstrates how to authenticate with ArcGIS Online (or your own portal) using OAuth2 to access secured resources (such as private web maps or layers). Accessing secured items requires a login on the portal that hosts them (an ArcGIS Online account, for example).
 * [ArcGIS token challenge](Xamarin.Android/Samples/Security/TokenSecuredChallenge/readme.md) - This sample demonstrates how to prompt the user for a username and password to authenticate with ArcGIS Server to access an ArcGIS token-secured service. Accessing secured services requires a login that's been defined on the server.
 

src/Android/Xamarin.Android/Samples/Security/IntegratedWindowsAuth/IntegratedWindowsAuth.jpg

@@ -533,12 +533,6 @@
     <Compile Include="$(MSBuildThisFileDirectory)Samples\Network analysis\FindServiceArea\FindServiceArea.xaml.cs">
       <DependentUpon>FindServiceArea.xaml</DependentUpon>
     </Compile>
-    <Compile Include="$(MSBuildThisFileDirectory)Samples\Security\IntegratedWindowsAuth\LoginPage.xaml.cs">
-      <DependentUpon>LoginPage.xaml</DependentUpon>
-    </Compile>
-    <Compile Include="$(MSBuildThisFileDirectory)Samples\Security\IntegratedWindowsAuth\IntegratedWindowsAuth.xaml.cs">
-      <DependentUpon>IntegratedWindowsAuth.xaml</DependentUpon>
-    </Compile>
     <Compile Include="$(MSBuildThisFileDirectory)Samples\Security\OAuth\OAuth.xaml.cs">
       <DependentUpon>OAuth.xaml</DependentUpon>
     </Compile>
@@ -1080,10 +1074,6 @@
     <EmbeddedResource Include="$(MSBuildThisFileDirectory)Samples\Network analysis\FindServiceArea\FindServiceArea.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
     </EmbeddedResource>
-    <EmbeddedResource Include="$(MSBuildThisFileDirectory)Samples\Security\IntegratedWindowsAuth\IntegratedWindowsAuth.xaml">
-      <SubType>Designer</SubType>
-      <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
-    </EmbeddedResource>
     <EmbeddedResource Include="$(MSBuildThisFileDirectory)Samples\Symbology\FeatureLayerExtrusion\FeatureLayerExtrusion.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
     </EmbeddedResource>
@@ -1458,12 +1448,6 @@
   <ItemGroup>
     <None Include="$(MSBuildThisFileDirectory)Samples\Layers\SceneLayerSelection\SceneLayerSelection.jpg" />
   </ItemGroup>
-  <ItemGroup>
-    <EmbeddedResource Include="$(MSBuildThisFileDirectory)Samples\Security\IntegratedWindowsAuth\LoginPage.xaml">
-      <SubType>Designer</SubType>
-      <Generator>MSBuild:UpdateDesignTimeXaml</Generator>
-    </EmbeddedResource>
-  </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="$(MSBuildThisFileDirectory)Resources\routingSymbol.png" />
   </ItemGroup>