Disable kEnableOnDemandDexDequicken.

Unable to reproduce the error that triggered the revert of:
https://android-review.googlesource.com/c/platform/art/+/1842432

This CL is a safer version of the complete removal. I'll follow-up with
the complete removal if the bots stay green.

Test: test.py
Test: atest FrameworksNetIntegrationTests
Bug: 196414062
Change-Id: If6d96aaed06288b89dff41a85900cb24dc47adb5
1 file changed