On-device signing: Don't specify MAC_LENGTH on verify operation.

This parameter is rejected on some implementations.

Bug: 188121857
Test: TEST_MAPPING
Change-Id: Ic41dddc57dbb2e56d22ed79a54515d9467dcfde2
Merged-In: Ic41dddc57dbb2e56d22ed79a54515d9467dcfde2
1 file changed