fix failing testcase

lib/session/call-info.js

@@ -91,7 +91,6 @@ class CallInfo {
       this.from = from || req.callingNumber;
       this.to = to;
       if (tag) this._customerData = tag;
-      if (opts.metadata) this._customerData  = {...this._customerData, ...opts.metadata};
     }
 
     this.localSipAddress = srf.locals.localSipAddress;