[parrot/parrot] edbff7: [test] Only one test, travis timed out >10min

[GitHub]

  Branch: refs/heads/smoke-me/gc-stress-gh1189
  Home:   https://github.com/parrot/parrot
  Commit: edbff75526bdb2491fc0fff5e05675a18099e952
      https://github.com/parrot/parrot/commit/edbff75526bdb2491fc0fff5e05675a18099e952
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2015-01-29 (Thu, 29 Jan 2015)

  Changed paths:
    M t/op/gc-stress.t

  Log Message:
  -----------
  [test] Only one test, travis timed out >10min

GH #1189