refactor(tone-analyzer): remove compatibility layer for tone analyzer

BREAKING CHANGE: Deprecated methods in Tone Analyzer are no longer available. Changed parameter names are no longer interally corrected.

To migrate your code, use the methods and parameters currently available with the service as documented here: https://www.ibm.com/watson/developercloud/tone-analyzer/api/v3/node.html?node

Author: dpopp07

test/unit/test.adapter.tone_analyzer.v3.js

@@ -180,13 +180,13 @@ describe('tone_analyzer.v3', function() {
     });
   });
 
-  it('tone-chat API should add optional language parameters', function() {
+  it('toneChat API should add optional language parameters', function() {
     const options = {
       utterances: [{ text: 'My charger isn’t working.', user: 'customer' }],
       content_language: 'en',
       accept_language: 'en',
     };
-    const req = tone_analyzer.tone_chat(options, noop);
+    const req = tone_analyzer.toneChat(options, noop);
     assert.equal(req.uri.href, service.url + tone_chat_path + '?version=2017-09-21');
     assert.equal(req.method, 'POST');
     assert.equal(req.headers['Content-Type'], 'application/json');