Remove ResponsiveVoice TTS module from core (#3049)

This module in its current format does not work due to API changes.
There is also a community built plugin that is now described in our
documentation.

mycroft/configuration/mycroft.conf

@@ -305,7 +305,7 @@
   // Override: REMOTE
   "tts": {
     // Engine.  Options: "mimic", "mimic2", "google", "marytts", "fatts", "espeak",
-    // "spdsay", "responsive_voice", "yandex", "polly", "mozilla"
+    // "spdsay", "yandex", "polly", "mozilla"
     "pulse_duck": false,
     "module": "mimic",
     "polly": {

mycroft/tts/responsive_voice_tts.py

@@ -1,61 +0,0 @@
-# Copyright 2017 Mycroft AI Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-import requests
-from .tts import TTS, TTSValidator
-
-
-class ResponsiveVoice(TTS):
-    def __init__(self, lang, config):
-        super(ResponsiveVoice, self).__init__(
-            lang, config, ResponsiveVoiceValidator(self), 'mp3',
-            ssml_tags=[]
-        )
-        self.clear_cache()
-        self.pitch = config.get("pitch", 0.5)
-        self.rate = config.get("rate", 0.5)
-        self.vol = config.get("vol", 1)
-        if "f" not in config.get("gender", "male"):
-            self.sv = "g1"
-            self.vn = "rjs"
-        else:
-            self.vn = self.sv = ""
-
-    def get_tts(self, sentence, wav_file):
-        params = {"t": sentence, "tl": self.lang,
-                  "pitch": self.pitch, "rate": self.rate,
-                  "vol": self.vol, "sv": self.sv, "vn": self.vn}
-        base_url = "http://responsivevoice.org/responsivevoice/getvoice.php"
-        r = requests.get(base_url, params)
-        with open(wav_file, "w") as f:
-            f.write(r.content)
-        return wav_file, None
-
-
-class ResponsiveVoiceValidator(TTSValidator):
-    def __init__(self, tts):
-        super(ResponsiveVoiceValidator, self).__init__(tts)
-
-    def validate_lang(self):
-        # TODO: Verify responsive voice can handle the requested language
-        pass
-
-    def validate_connection(self):
-        r = requests.get("http://responsivevoice.org")
-        if r.status_code == 200:
-            return True
-        raise AssertionError("Could not reach http://responsivevoice.org")
-
-    def get_tts_class(self):
-        return ResponsiveVoice

mycroft/tts/tts.py

@@ -560,7 +560,6 @@ class TTSFactory:
     from mycroft.tts.spdsay_tts import SpdSay
     from mycroft.tts.bing_tts import BingTTS
     from mycroft.tts.ibm_tts import WatsonTTS
-    from mycroft.tts.responsive_voice_tts import ResponsiveVoice
     from mycroft.tts.mimic2_tts import Mimic2
     from mycroft.tts.yandex_tts import YandexTTS
     from mycroft.tts.dummy_tts import DummyTTS
@@ -578,7 +577,6 @@ class TTSFactory:
         "spdsay": SpdSay,
         "watson": WatsonTTS,
         "bing": BingTTS,
-        "responsive_voice": ResponsiveVoice,
         "yandex": YandexTTS,
         "polly": PollyTTS,
         "mozilla": MozillaTTS,