Fixed android-volley-library responses when additionalProperties is present. Clean responses mechanism using volley default's

Author: Shyri

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AndroidClientCodegen.java

@@ -281,10 +281,6 @@ private void addSupportingFilesForVolley() {
         supportingFiles.add(new SupportingFile("manifest.mustache", projectFolder, "AndroidManifest.xml"));
         supportingFiles.add(new SupportingFile("apiInvoker.mustache",
                 (sourceFolder + File.separator + invokerPackage).replace(".", File.separator), "ApiInvoker.java"));
-        supportingFiles.add(new SupportingFile("responses.mustache",
-                (sourceFolder + File.separator + invokerPackage).replace(".", File.separator), "Responses.java"));
-        // supportingFiles.add(new SupportingFile("httpPatch.mustache",
-        //        (sourceFolder + File.separator + invokerPackage).replace(".", File.separator), "HttpPatch.java"));
         supportingFiles.add(new SupportingFile("jsonUtil.mustache",
                 (sourceFolder + File.separator + invokerPackage).replace(".", File.separator), "JsonUtil.java"));
         supportingFiles.add(new SupportingFile("apiException.mustache",

modules/swagger-codegen/src/main/resources/android/libraries/volley/api.mustache

@@ -50,7 +50,7 @@ public class {{classname}} {
 {{#allParams}}   * @param {{paramName}} {{description}}
 {{/allParams}}   * @return {{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}
    */
-  public void {{nickname}} ({{#allParams}}{{{dataType}}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{^hasMore}}, {{/hasMore}}{{/allParams}}final {{#returnBaseType}}Responses.{{returnBaseType}}{{#isListContainer}}List{{/isListContainer}}Response{{/returnBaseType}}{{^returnBaseType}}Responses.StringResponse{{/returnBaseType}} responseListener, final Response.ErrorListener errorListener) {
+  public void {{nickname}} ({{#allParams}}{{{dataType}}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{^hasMore}}, {{/hasMore}}{{/allParams}}final Response.Listener<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}String{{/returnType}}> responseListener, final Response.ErrorListener errorListener) {
     Object postBody = {{#bodyParam}}{{paramName}}{{/bodyParam}}{{^bodyParam}}null{{/bodyParam}};
 
   {{#allParams}}{{#required}}