Stop waiting a set time for onion service descriptors

After we make chutney check for onion service descriptors in legacy/trac#33609 (moved), we can stop waiting a set time for onion service descriptors to download.

First, set HS_WAIT_FOR_UNCHECKED_DIR_INFO to 0: https://github.com/torproject/chutney/blob/master/lib/chutney/TorNet.py#L953

Then check that make test-network-all still passes on:

• Tor master,
• Tor maint-0.3.5

Then check that chutney's CI still passes.

If all those tests pass, we can remove all the code that uses HS_WAIT_FOR_UNCHECKED_DIR_INFO:

• remove HS_WAIT_FOR_UNCHECKED_DIR_INFO
• remove getUncheckedDirInfoWaitTime()
• remove all the variables, code, and comments that depend on getUncheckedDirInfoWaitTime()
  • https://github.com/torproject/chutney/blob/master/lib/chutney/TorNet.py#L2226
  • https://github.com/torproject/chutney/blob/master/lib/chutney/TorNet.py#L2266