Disable the dex2oat swap test for x86 altogether.

On x86, this test has been seen failing on the CMS
configuration, not just the CC configuration.

Test: m ART_USE_READ_BARRIER=true test-art-host-gtest
Test: m ART_USE_READ_BARRIER=false test-art-host-gtest
Bug: 29259363
Change-Id: I3690aaec0aedd0020660aff42b408487e042cfd4
2 files changed