test_utils.py uninstalls numpy

[marthacryan]

In #4622, I encountered a very odd recursion error, and the solution was to move the test that was failing to the top of the file. This was because the test above it was uninstalling numpy. We should investigate why this test is even doing that and potentially change the approach to prevent similar issues.

[gvwilson]

"the test above it was uninstalling numpy" is one I've never run into before…