Remove test with int overflow

What does this MR do?

Remove the test case that overflows int. It was added to cover some edge cases with a large number of projects, but I think this case will never be reached. I've added the value 123456789012345 to the ProjectID but this seems like too much for this field.

This is affecting the 32bit version build.

What are the relevant issue numbers?

Closes #25765 (closed)