smarthome/local: remove unused IndicationMode.BLINK
smarthome/local: remove unused IndicationMode.BLINK

Bug: 130215141
Change-Id: I4f46835cf7658f7cabdb1e31f0d86117da4a2d95

actions-on-google/smart-home-local,actions-on-google/smart-home-local,actions-on-google/smart-home-local