[typescript-axios][client] Unnecessary imports occurs when using withSeparateModelsAndApi

Created by: tanmen

fixes #5796 (closed)

Hello. When using typescript-axios, a warning occurred in unused import. I tried to fix it, so please take a look if you like.

Before/After

Before

// tslint:disable
/**
 * My application
 * My application
 *
 * The version of the OpenAPI document: 1.0.0
 * 
 *
 * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
 * https://openapi-generator.tech
 * Do not edit the class manually.
 */


import * as globalImportUrl from 'url';
import globalAxios, { AxiosPromise, AxiosInstance } from 'axios';
import { Configuration } from '../configuration';
// Some imports not used depending on template conditions
// @ts-ignore
import { BASE_PATH, COLLECTION_FORMATS, RequestArgs, BaseAPI, RequiredError } from '../base';

import { BoxResponse } from '../models';
import { ForbiddenResponse } from '../models'; // <- type error

After

/**
 * My application
 * My application
 *
 * The version of the OpenAPI document: 1.0.0
 * 
 *
 * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
 * https://openapi-generator.tech
 * Do not edit the class manually.
 */


import * as globalImportUrl from 'url';
import globalAxios, { AxiosPromise, AxiosInstance } from 'axios';
import { Configuration } from '../configuration';
// Some imports not used depending on template conditions
// @ts-ignore
import { BASE_PATH, COLLECTION_FORMATS, RequestArgs, BaseAPI, RequiredError } from '../base';

// @ts-ignore
import { BoxResponse } from '../models';
// @ts-ignore
import { ForbiddenResponse } from '../models'; // <- type error

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