Remove extraneous newlines from query tests

[JordonPhillips]

This removes all the newlines from query formatted bodies in the AWS
protocol tests. While these made the tests easier to read, they
weren't actually valid since a client sending a body formatted that
way would encounter errors.

EC2 formats their docs that way, but they make it clear that it's just for readability:

To make these example requests even easier to read, AWS documentation may present them in the following format:

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