Revert "Allow all domains access to /dev/qemu_trace."

This reverts commit b1b12f8ad49ecbba7dd6b9db2a0ca8fafa532d82.

(cherry picked from commit 097e840b062b5191dac757dc998cd072ac7f308a)

Change-Id: I89a9a0879a415c177091852a579c6dfd8c8a5b0a
21 files changed