Remove refs to "owner" and "credentials" grants

These grant types don't exist in OAuth 2.0 and there is
no reason to have cases for them in the codebase.

Author: clhodapp

dist/scripts/api-console.js

@@ -3109,18 +3109,10 @@
             label: 'Authorization Code',
             value: 'authorization_code'
           },
-          {
-            label: 'Resource Owner Password Credentials',
-            value: 'owner'
-          },
           {
             label: 'Resource Owner Password Credentials',
             value: 'password'
           },
-          {
-            label: 'Client Credentials',
-            value: 'credentials'
-          },
           {
             label: 'Client Credentials',
             value: 'client_credentials'
@@ -3683,7 +3675,7 @@
       popup(auth[grantType].getUri());
     }
 
-    if (grantType === 'owner' || grantType === 'password') {
+    if (grantType === 'password') {
       auth.owner.getToken(this.credentials.username, this.credentials.password, function (err, user, raw) {
         if (err) {
           done(raw, err);
@@ -3697,7 +3689,7 @@
       });
     }
 
-    if (grantType === 'credentials'|| grantType === 'client_credentials') {
+    if (grantType === 'client_credentials') {
       auth.credentials.getToken(function (err, user, raw) {
         if (err) {
           done(raw, err);