Unpin extension versions in the E2E test app (#425)

Author: AnatoliB

test/E2E/TestFunctionApp/extensions.csproj

@@ -5,10 +5,6 @@
 	<DefaultItemExcludes>**</DefaultItemExcludes>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.CosmosDB" Version="3.0.5" />
     <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.DurableTask" Version="1.8.2" />
-    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.EventHubs" Version="4.1.1" />
-    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="3.0.10" />
-    <PackageReference Include="Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator" Version="1.1.0" />
   </ItemGroup>
 </Project>