remove unused files for nodejs gcf (#4808)

modules/swagger-codegen/src/main/resources/nodejs-google-cloud-functions/index.mustache

@@ -1,44 +0,0 @@
-'use strict';
-
-var swaggerTools = require('swagger-tools');
-var jsyaml = require('js-yaml');
-var fs = require('fs');
-
-// swaggerRouter configuration
-var options = {
-  controllers: './controllers',
-  useStubs: false
-};
-
-// The Swagger document (require it, build it programmatically, fetch it from a URL, ...)
-var spec = fs.readFileSync('./api/swagger.yaml', 'utf8');
-var swaggerDoc = jsyaml.safeLoad(spec);
-
-function toPromise(f, req, res) {
-  return new Promise(function(resolve, reject) {
-    f(req, res, function(err) {
-      if (err) {
-        reject(err);
-      } else {
-        resolve();
-      }
-    });
-  });
-}
-
-exports.{{exportedName}} = function(req, res) {
-  swaggerTools.initializeMiddleware(swaggerDoc, function(middleware) {
-    var metadata = middleware.swaggerMetadata();
-    var validator = middleware.swaggerValidator();
-    var router = middleware.swaggerRouter(options);
-    req.url = swaggerDoc.basePath + req.url;
-    toPromise(metadata, req, res).then(function() {
-      return toPromise(validator, req, res);
-    }).then(function() {
-      return toPromise(router, req, res);
-    }).catch(function(err) {
-      console.error(err);
-      res.status(res.statusCode || 400).send(err);
-    });
-  });
-};