Revert "Modify IKeymasterDevice/default to version 4.1" This reverts commit 18894cabcf37d26fbd38f143766c5182eebc312c. Reason for revert: OTA fail Bug: 189069377 Change-Id: Icec72df515e92959593d19990b755c3aadc11a72 (cherry picked from commit 032895e7368bf2f15ea4c2cd0a95b0bc6b378f51)