Remove test/write_info_json

This is now covered by every single test_download testcase anyways :)

test/test_write_info_json.py

@@ -1,76 +0,0 @@
-#!/usr/bin/env python
-# coding: utf-8
-from __future__ import unicode_literals
-
-# Allow direct execution
-import os
-import sys
-import unittest
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
-from test.helper import get_params
-
-
-import io
-import json
-
-import youtube_dl.YoutubeDL
-import youtube_dl.extractor
-
-
-class YoutubeDL(youtube_dl.YoutubeDL):
-    def __init__(self, *args, **kwargs):
-        super(YoutubeDL, self).__init__(*args, **kwargs)
-        self.to_stderr = self.to_screen
-
-params = get_params({
-    'writeinfojson': True,
-    'skip_download': True,
-    'writedescription': True,
-})
-
-
-TEST_ID = 'BaW_jenozKc'
-INFO_JSON_FILE = TEST_ID + '.info.json'
-DESCRIPTION_FILE = TEST_ID + '.mp4.description'
-EXPECTED_DESCRIPTION = '''test chars:  "'/\ä↭𝕐
-test URL: https://github.com/rg3/youtube-dl/issues/1892
-
-This is a test video for youtube-dl.
-
-For more information, contact phihag@phihag.de .'''
-
-
-class TestInfoJSON(unittest.TestCase):
-    def setUp(self):
-        # Clear old files
-        self.tearDown()
-
-    def test_info_json(self):
-        ie = youtube_dl.extractor.YoutubeIE()
-        ydl = YoutubeDL(params)
-        ydl.add_info_extractor(ie)
-        ydl.download([TEST_ID])
-        self.assertTrue(os.path.exists(INFO_JSON_FILE))
-        with io.open(INFO_JSON_FILE, 'r', encoding='utf-8') as jsonf:
-            jd = json.load(jsonf)
-        self.assertEqual(jd['upload_date'], '20121002')
-        self.assertEqual(jd['description'], EXPECTED_DESCRIPTION)
-        self.assertEqual(jd['id'], TEST_ID)
-        self.assertEqual(jd['extractor'], 'youtube')
-        self.assertEqual(jd['title'], '''youtube-dl test video "'/\ä↭𝕐''')
-        self.assertEqual(jd['uploader'], 'Philipp Hagemeister')
-
-        self.assertTrue(os.path.exists(DESCRIPTION_FILE))
-        with io.open(DESCRIPTION_FILE, 'r', encoding='utf-8') as descf:
-            descr = descf.read()
-        self.assertEqual(descr, EXPECTED_DESCRIPTION)
-
-    def tearDown(self):
-        if os.path.exists(INFO_JSON_FILE):
-            os.remove(INFO_JSON_FILE)
-        if os.path.exists(DESCRIPTION_FILE):
-            os.remove(DESCRIPTION_FILE)
-
-if __name__ == '__main__':
-    unittest.main()