Disable 137-cfi and 629-vdex-speed in no-prebuild mode

The tests require speed compile which is no longer the default for no-
prebuild condigs.

Test: testrunner.py --no-prebuild
Bug: 38442248
Change-Id: I75f870e240a9581cfcc0a9a8b42edb885db6d14e
1 file changed