Remove *.TeamExplorer.Extensions Dependency

Author: jcansdale

src/GitHub.VisualStudio.Vsix/source.extension.vsixmanifest

@@ -19,7 +19,6 @@
   <Dependencies>
     <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.5,)" />
     <Dependency Id="Microsoft.VisualStudio.MPF.14.0" DisplayName="Visual Studio MPF 14.0" d:Source="Installed" Version="[14.0,)" />
-    <Dependency Id="Microsoft.VisualStudio.TeamFoundation.TeamExplorer.Extensions" DisplayName="Team Explorer" d:Source="Installed" Version="[14.0,)" />
   </Dependencies>
   <Assets>
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="GitHub.Exports" Path="|GitHub.Exports|" />
@@ -45,4 +44,4 @@
   <Prerequisites>
     <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0.25824.0,)" DisplayName="Visual Studio core editor" />
   </Prerequisites>
-</PackageManifest>
+</PackageManifest>