There are historically valid but now outdated timeouts spread throughout the test suite

[exarkun]

Throughout the project's history the CI configuration has involved an interesting assortment of CI machines. These are referenced (but little described) in various places in the test suite as explanations for custom timeouts.

These machines are no longer in use by the project's CI system. The timeouts applied are unnecessary. Additionally, they allow certain tests, when hanging, to delay the test suite for significantly longer than the default timeout. This also interferes with CI hang detection configuration (since it makes it very difficult to know how long to have to wait before being sure the whole test suite is irretrievably hung).

Remove these custom timeouts.

[exarkun]

Fixed in a431ea2241d49a576b92a37c0723b911986898e8