Remove methods deprecated in Drake from L2ModificationInstruction API

Change-Id: I30dbc2e9c590d4bc2bc672e13581dbd1c3b3561b
diff --git a/drivers/default/src/main/java/org/onosproject/driver/pipeline/OFDPA2GroupHandler.java b/drivers/default/src/main/java/org/onosproject/driver/pipeline/OFDPA2GroupHandler.java
index 3c7394a..56433cf 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/pipeline/OFDPA2GroupHandler.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/pipeline/OFDPA2GroupHandler.java
@@ -698,7 +698,7 @@
                     }
                     if (l2ins.subtype() == L2ModificationInstruction.L2SubType.MPLS_LABEL) {
                         if (innermostLabel == null) {
-                            innermostLabel = ((L2ModificationInstruction.ModMplsLabelInstruction) l2ins).mplsLabel();
+                            innermostLabel = ((L2ModificationInstruction.ModMplsLabelInstruction) l2ins).label();
                         }
                     }
                 }