Remove EntityFramework.Tools
Remove EntityFramework.Tools

This reverts commit 81d46cfaed47441c2642196c79b36e289eb478f3.

aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore