Removing requirement for FEATURE_DEVICE_ADMIN in DPMS.setActivePasswordState().

Bug:133782444
Test: cts-tradefed run cts-dev -m CtsDevicePolicyManagerTestCases -t com.android.cts.devicepolicy.PasswordComplexityTest#testGetPasswordComplexity (on a device without the feature)
Change-Id: I5f55a867a1a5a86387f9ad9877e593adac6f6f90