Reset the websocket consts to the go-ethereum values

previously the buffer size was increased to 1M to accomodate the inter
node communications, and since then the websocket calls have been
replaced by the interface calls, so reverting these values

rpc/websocket.go

@@ -34,11 +34,11 @@ import (
 )
 
 const (
-	wsReadBuffer       = 1024 * 1024
-	wsWriteBuffer      = 1024 * 1024
-	wsPingInterval     = 60 * time.Second
+	wsReadBuffer       = 1024
+	wsWriteBuffer      = 1024
+	wsPingInterval     = 30 * time.Second
 	wsPingWriteTimeout = 5 * time.Second
-	wsMessageSizeLimit = 210 * 1024 * 1024
+	wsMessageSizeLimit = 32 * 1024 * 1024
 )
 
 var wsBufferPool = new(sync.Pool)