Revert "RateLimitTest: temporarily dump ConnectivityThread if setUp fails"

This reverts commit cbe17558269328dd08e02228d2766dee02442b6e.

Reason for revert: we found the culprit for the flakiness and b/272147742 is fixed.

Change-Id: I672c42bb57184393588666b6196f3a316f8c99c7
1 file changed