remove redundant proto file

rpc.proto

@@ -1,78 +0,0 @@
-// Borrowed from https://github.com/libp2p/go-libp2p-pubsub/blob/master/pb/rpc.proto
-
-syntax = "proto2";
-
-package pubsub.pb;
-
-message RPC {
-	repeated SubOpts subscriptions = 1;
-	repeated Message publish = 2;
-
-	message SubOpts {
-		optional bool subscribe = 1; // subscribe or unsubcribe
-		optional string topicid = 2;
-	}
-
-	optional ControlMessage control = 3;
-}
-
-message Message {
-	optional bytes from = 1;
-	optional bytes data = 2;
-	optional bytes seqno = 3;
-	repeated string topicIDs = 4;
-	optional bytes signature = 5;
-	optional bytes key = 6;
-}
-
-message ControlMessage {
-	repeated ControlIHave ihave = 1;
-	repeated ControlIWant iwant = 2;
-	repeated ControlGraft graft = 3;
-	repeated ControlPrune prune = 4;
-}
-
-message ControlIHave {
-	optional string topicID = 1;
-	repeated string messageIDs = 2;
-}
-
-message ControlIWant {
-	repeated string messageIDs = 1;
-}
-
-message ControlGraft {
-	optional string topicID = 1;
-}
-
-message ControlPrune {
-	optional string topicID = 1;
-}
-
-message TopicDescriptor {
-	optional string name = 1;
-	optional AuthOpts auth = 2;
-	optional EncOpts enc = 3;
-
-	message AuthOpts {
-		optional AuthMode mode = 1;
-		repeated bytes keys = 2; // root keys to trust
-
-		enum AuthMode {
-			NONE = 0; // no authentication, anyone can publish
-			KEY = 1; // only messages signed by keys in the topic descriptor are accepted
-			WOT = 2; // web of trust, certificates can allow publisher set to grow
-		}
-	}
-
-	message EncOpts {
-		optional EncMode mode = 1;
-		repeated bytes keyHashes = 2; // the hashes of the shared keys used (salted)
-
-		enum EncMode {
-			NONE = 0; // no encryption, anyone can read
-			SHAREDKEY = 1; // messages are encrypted with shared key
-			WOT = 2; // web of trust, certificates can allow publisher set to grow
-		}
-	}
-}