Remove Solicitation from the network

Instead, when a new peer is discovered it is sent a sync message i.e. we
do the full sync when discovering peers

router/service/proto/router.proto

@@ -7,7 +7,6 @@ service Router {
 	rpc Lookup(LookupRequest) returns (LookupResponse) {};
         rpc Watch(WatchRequest) returns (stream Event) {};
         rpc Advertise(Request) returns (stream Advert) {};
-        rpc Solicit(Request) returns (Response) {};
         rpc Process(Advert) returns (ProcessResponse) {};
 	rpc Status(Request) returns (StatusResponse) {};
 }
@@ -74,12 +73,6 @@ message Advert {
         repeated Event events = 5;
 }
 
-// Solicit solicits routes
-message Solicit {
-        // id of the soliciting router
-        string id = 1;
-}
-
 // ProcessResponse is returned by Process
 message ProcessResponse {}