Remove the custom ThreadPoolExecutor from the client

Author: machadoit

src/main/scala/com/codacy/client/bitbucket/client/BitbucketClient.scala

@@ -200,9 +200,7 @@ class BitbucketClient(key: String, secretKey: String, token: String, secretToken
 
   private def withClient[T](block: NingWSClient => T): Try[T] = {
     val config = new NingAsyncHttpClientConfigBuilder().build()
-    val clientConfig = new AsyncHttpClientConfig.Builder(config)
-      .setExecutorService(new ThreadPoolExecutor(5, 15, 30L, TimeUnit.SECONDS, new SynchronousQueue[Runnable]))
-      .build()
+    val clientConfig = new AsyncHttpClientConfig.Builder(config).build()
     val client = new NingWSClient(clientConfig)
     val result = Try(block(client))
     client.close()