Change agg_port_id to alloc_id and remove sched_id from openolt.proto

Change-Id: I83bac16bec9b2c4ac3de71360ddd1d15444d3126
diff --git a/protos/openolt.proto b/protos/openolt.proto
index e9e8007..ac53e6b 100644
--- a/protos/openolt.proto
+++ b/protos/openolt.proto
@@ -218,8 +218,7 @@
     fixed32 onu_id = 2;
     SerialNumber serial_number = 3;
     fixed32 pir = 4;   // peak information rate assigned to onu
-    fixed32 agg_port_id = 5;
-    fixed32 sched_id = 6;
+    fixed32 alloc_id = 5;
 }
 
 message OmciMsg {