Feature/remove defaultfiles (#44)

* Update templates

* update default

Author: HemanthDogiparthi12

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptFlowtypedClientCodegen.java

@@ -115,8 +115,6 @@ public void processOpts() {
         supportingFiles.add(new SupportingFile("index.mustache", "src", "index.js"));
         supportingFiles.add(new SupportingFile("api.mustache", "src", "api.js"));
         supportingFiles.add(new SupportingFile("configuration.mustache", "src", "configuration.js"));
-        supportingFiles.add(new SupportingFile("DefaultHttpClient.mustache", "src", "DefaultHttpClient.js"));
-        supportingFiles.add(new SupportingFile("HttpClient.mustache", "src", "HttpClient.js"));
 
         supportingFiles.add(new SupportingFile("gitignore", "", ".gitignore"));