Revert^2 "Added CTS tests for stamp annotation"

This reverts commit c1feb56e74b41ea8e9ff11cd7576243eecd1cbac.

Reason for revert: <Fixed this CTS test>

CTS test was failing because it was unable to find method getFirst of java list as it was using a lower java version on older android versions. Changed list.getFirst() to list.get(0) to fix this.

Change-Id: Ifca6a39f0138a6d36092c071fcd51c4fa9657315