Remove strong name signing for Ix

Ix/NET/Source/Common.targets

@@ -157,14 +157,6 @@
     <DefineConstants>$(DefineConstants);STABLE</DefineConstants>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(ProductSignAssembly)' == 'true' AND '$(SignedBuild)' == '1' ">
-    <DefineConstants>$(DefineConstants);SIGNED</DefineConstants>
-    <SignAssembly>true</SignAssembly>
-    <AssemblyOriginatorKeyFile>..\..\35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>
-    <DelaySign>true</DelaySign>
-    <SignKeyId>72</SignKeyId>	
-  </PropertyGroup>
-
   <PropertyGroup Condition=" '$(BuildLab)' == '1' ">
     <DefineConstants>$(DefineConstants);NO_CODECOVERAGE</DefineConstants>
   </PropertyGroup>

Ix/NET/Source/System.Interactive.Async/System.Interactive.Async.csproj

@@ -12,7 +12,6 @@
     <AssemblyName>System.Interactive.Async</AssemblyName>
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <ProductSignAssembly>true</ProductSignAssembly>
     <NoWarn>1591</NoWarn>	
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'ReleaseSL5|AnyCPU'">

Ix/NET/Source/System.Interactive.Providers/System.Interactive.Providers.csproj

@@ -12,7 +12,6 @@
     <AssemblyName>System.Interactive.Providers</AssemblyName>
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <ProductSignAssembly>true</ProductSignAssembly>
   </PropertyGroup>
   <Import Project="..\Common.targets" />
   <PropertyGroup>

Ix/NET/Source/System.Interactive/System.Interactive.csproj

@@ -12,7 +12,6 @@
     <AssemblyName>System.Interactive</AssemblyName>
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <ProductSignAssembly>true</ProductSignAssembly>
   </PropertyGroup>
   <Import Project="..\Common.targets" />
   <PropertyGroup>