Remove solicit map request message class and interface

This control message is a special type of map request message,
therefore, it can be merged with LispMapRequest class.

Change-Id: I9549a18277411947cf4d485f62f92d8259575c94
diff --git a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispType.java b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispType.java
index 9ffefcf..e4d005b 100644
--- a/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispType.java
+++ b/protocols/lisp/msg/src/main/java/org/onosproject/lisp/msg/protocols/LispType.java
@@ -25,7 +25,5 @@
     LISP_MAP_REGISTER,          // LISP Map-Register Message
     LISP_MAP_NOTIFY,            // LISP Map-Notify Message
     LISP_MAP_REQUEST,           // LISP Map-Request Message
-    LISP_MAP_REPLY,             // LISP Map-Reply Message
-    LISP_MAP_REPLY_ACTION,      // LISP Map-Reply-Action Message
-    LISP_SOLICIT_MAP_REQUEST;   // LISP Solicit-Map-Request Message
+    LISP_MAP_REPLY              // LISP Map-Reply Message
 }