Delete standard output in VtsAidlKeyMintTargetTest

The Done flag of VtsAidlKeyMintTargetTest is false during running
the module with ‘--collect-tests-only’ because it uses standard
output to print logs.

Bug: 340576534
Test: run vts -m VtsAidlKeyMintTargetTest --collect-tests-only

Change-Id: I3d81f7e59b6189fab1b146320263509f2694c11e
Signed-off-by: Huang Rui <rui1.huang@intel.com>
Signed-off-by: Liu Kai <kai1.liu@intel.com>
1 file changed