marketAveragePrice gettign rid of model

Author: Daniel1984

lib/rest2.js

@@ -37,9 +37,7 @@ const {
   ChangeLog,
   PublicPulseProfile,
   PulseMessage,
-  Invoice,
-  TradingAvgPrice,
-  FundingAvgRate
+  Invoice
 } = require('bfx-api-node-models')
 
 const RESTv1 = require('./rest1')
@@ -419,13 +417,7 @@ class RESTv2 {
    */
   marketAveragePrice (params, cb) {
     const usp = new URLSearchParams(params)
-    const transformerKey = (usp.get('symbol') || '')[0]
-    const transformer = {
-      t: TradingAvgPrice,
-      f: FundingAvgRate
-    }[transformerKey]
-
-    return this._makePublicRequest(`/calc/trade/avg?${usp.toString()}`, cb, transformer || null)
+    return this._makePublicPostRequest(`/calc/trade/avg?${usp.toString()}`, cb)
   }
 
   /**