Revert "Fix the fix to the infinite reload loop"

This reverts commit 1ad3dd17af7e7bc8973b1dc0169b88f59e5f2c9e.
Revert "Fix infinite reload loop running tests"

This reverts commit 35d816a36347e9f4d21d0c57a0f894cb848203f0.
Fix infinite reload *AND* no-reload bugs in tests

The root of the problem David Greenspan tried to fix was that
__meteor_runtime_config__.autoupdateVersion was incorrectly 'unknown'
when running tests (due to packages/test-in-browser/autoupdate.js being
handled wrong by autoupdate_server.js).  Turns out the right solution is
to ensure the version is known, not to avoid reloading when the version
is unknown.