Remove unused package reference - alot of dependant DLLs would need to be added into an Umbraco site with Forms for a tiny bit of convenience

Author: Warren Buckley

src/Umbraco.Forms.Extensions.Crm.Hubspot/Umbraco.Forms.Extensions.Crm.Hubspot.csproj

@@ -18,7 +18,6 @@
 	</PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Net.Http.Json" Version="5.0.0" />
     <PackageReference Include="UmbracoCms.Web" Version="8.14.0" />
     <PackageReference Include="UmbracoForms.Core" Version="8.7.4" />
   </ItemGroup>