Revert unncessary changes introduced by the enketo code

The previous implementation treated the enketo code as another type of survey.
However the enketo survey is different than the multi-label UI.
We have now separated out the functionality into separate directives, and removed all
references to the ConfirmHelper in the diary code

The eneketo survey is a single array entry with key "SURVEY", and is stored in the directive.
In the diary, deployers can choose between the multi-ui and enketo implementations
e-mission/e-mission-docs#727 (comment)

www/js/survey/multilabel/trip-confirm-services.js

@@ -1,8 +1,7 @@
 angular.module('emission.survey.multilabel.services', ['ionic', 'emission.i18n.utils', "emission.plugin.logger"])
 .factory("ConfirmHelper", function($http, $ionicPopup, $translate, i18nUtils, Logger) {
     var ch = {};
-    // ch.INPUTS = ["MODE", "PURPOSE"]
-    ch.INPUTS = ["SURVEY"];
+    ch.INPUTS = ["MODE", "PURPOSE"]
     ch.inputDetails = {
         "MODE": {
             labeltext: $translate.instant(".mode"),
@@ -17,13 +16,6 @@ angular.module('emission.survey.multilabel.services', ['ionic', 'emission.i18n.u
             width: "col-50",
             key: "manual/purpose_confirm",
             otherVals: {},
-        },
-        "SURVEY": {
-            labeltext: $translate.instant(".survey"),
-            choosetext: $translate.instant(".choose-survey"),
-            width: "col",
-            key: "manual/survey_response",
-            otherVals: {},
         }
     }