Disabled the Mf.test_opendx_s2_te_rex GUI test.
This is to allow the test suite to pass for the 3.2.0 relax release. The resolution for the dx.map GUI bug that it exposes will have to wait for a later relax release.
Authored by: bugman 2014-05-20
Parent: [r23265]
Child: [r23267]