Revert "sepolicy: Label ro.config.ring_notification_vol_steps"

This reverts commit 98121aa273b70fe6527eff16348a005691a7ff6f.

Change-Id: I205529dfb5857829f4531166fd85fc4c98fadaa5
diff --git a/common/private/property_contexts b/common/private/property_contexts
deleted file mode 100644
index 0b62bdd..0000000
--- a/common/private/property_contexts
+++ /dev/null
@@ -1 +0,0 @@
-ro.config.ring_notification_vol_steps u:object_r:systemsound_config_prop:s0 exact string