Revert "Re-enable test that was causing TimeoutExceptions on ARM64."

The test is failing again on the ARMv8 concurrent collector
configuration
(https://build.chromium.org/p/client.art/builders/armv8-concurrent-collector/builds/1833/steps/test%20libcore/logs/stdio).

This reverts commit 9e9411cc6edf5fa8be0cabd11203fac09e4bac13.

Bug: 26155567
Change-Id: I81b543a48cbbc1eca99efcc430965222ca6edfec
1 file changed