remove unused file

global.nuspec.signed.erb

@@ -1,29 +0,0 @@
-<?xml version="1.0"?>
-<package >
-  <metadata>
-    <id>Owin.Security.Providers-signed</id>
-    <version><%= @version %></version>
-    <authors>Jerrie Pelser, Tommy Parnell and contributors</authors>
-    <owners>Tommy Parnell</owners>
-    <licenseUrl>http://opensource.org/licenses/MIT</licenseUrl>
-    <projectUrl>https://github.com/tparnell8/OwinOAuthProviders</projectUrl>
-    <requireLicenseAcceptance>false</requireLicenseAcceptance>
-    <description>
-      Adds additional OAuth providers for OWIN to use with ASP.NET
-    </description>
-    <summary>
-      Additional OAuth providers for Katana (OWIN).
-      There are many individual providers, this package is a meta package that has a dependency on all of them.
-    </summary>
-    <releaseNotes>
-    View the release notes on github
-    </releaseNotes>
-    <copyright>Copyright 2013 - 2016</copyright>
-    <tags>owin katana oauth LinkedIn Yahoo Google+ GitHub Reddit Instagram StackExchange SalesForce TripIt Buffer ArcGIS Dropbox Wordpress Battle.NET Yammer OpenID Steam Twitch</tags>
-    <dependencies>
-      <% for @item in @nugets %>
-        <dependency id="<%= @item %>" version="[<%= @version %>]" />
-      <% end %>
-       </dependencies>
-  </metadata>
-</package>