Remove any reference to delay and load props

[kamaltmo]

As mentioned in this issue, apollographql/react-apollo#1875, these props seem to not exist or at least are non-functional. This PR is to reduce confusion when using the Query component.

Checklist:

• If this PR is a new feature, please reference an issue where a consensus about the design was reached (not necessary for small changes)
• Make sure all of the significant new logic is covered by tests

[apollo-cla]

@kamaltmo: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Meteor Contributor Agreement here: https://contribute.meteor.com/

[hwillson]

Thanks for this @kamaltmo! I'm just digging into the background on why these were added to the docs when they aren't wired up in React Apollo. I'll post back shortly.

[hwillson]

Backstory: apollographql/react-apollo#1875 (comment)

We'll move ahead with removing these.

[hwillson]

Thanks very much @kamaltmo!