[CEC Configuration] Remove 'ro.hdmi.cec.source.power_state_change_on_active_source_lost' property

Bug: 171870484
Test: smoke tested
Change-Id: I59b749e6d90fbd8273a2ec3f16652cc3e5574de9
diff --git a/srcs/android/sysprop/HdmiProperties.sysprop b/srcs/android/sysprop/HdmiProperties.sysprop
index c14e785..480d35d 100644
--- a/srcs/android/sysprop/HdmiProperties.sysprop
+++ b/srcs/android/sysprop/HdmiProperties.sysprop
@@ -99,17 +99,3 @@
     enum_values: "none|wake_up_only|wake_up_and_send_active_source"
     prop_name: "ro.hdmi.cec.source.playback_device_action_on_routing_control"
 }
-
-# Determines behaviour of the device when <Active Source> is lost.
-# <ul>
-# <li><b>none</b> No power state change.
-# <li><b>standby_now</b> PowerManager.goToSleep() is called.
-# </ul>
-prop {
-    api_name: "power_state_change_on_active_source_lost"
-    type: Enum
-    scope: Internal
-    access: Readonly
-    enum_values: "none|standby_now"
-    prop_name: "ro.hdmi.cec.source.power_state_change_on_active_source_lost"
-}