Bump MIN_PEER_PROTO_VERSION to 70214

We no longer need to support pre-v0.14 nodes.

Author: UdjinM6

src/version.h

@@ -20,7 +20,7 @@ static const int INIT_PROTO_VERSION = 209;
 static const int GETHEADERS_VERSION = 70077;
 
 //! disconnect from peers older than this proto version
-static const int MIN_PEER_PROTO_VERSION = 70213;
+static const int MIN_PEER_PROTO_VERSION = 70214;
 
 //! nTime field added to CAddress, starting with this version;
 //! if possible, avoid requesting addresses nodes older than this