Remove unnecessary binding redirect (#7989)

Progress on https://github.com/NuGet/Engineering/issues/3128

Author: joelverhagen

src/NuGetGallery/Web.config

@@ -640,10 +640,6 @@
         <assemblyIdentity name="Microsoft.ApplicationInsights" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
         <bindingRedirect oldVersion="0.0.0.0-2.12.0.21496" newVersion="2.12.0.21496"/>
       </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="MessagePack" publicKeyToken="B4A0369545F0A1BE" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-1.9.0.0" newVersion="1.9.0.0"/>
-      </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="EntityFramework" publicKeyToken="B77A5C561934E089" culture="neutral"/>
         <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>