remove unused files

www/views/preferences.html

@@ -29,14 +29,6 @@
         </span>
         <i class="icon bp-arrow-right"></i>
       </a>
-      <a class="item has-setting-value item-icon-right" ui-sref="tabs.preferences.preferencesEmail">
-        <span class="setting-title" translate>Email Notifications</span>
-        <span class="setting-value">
-          <span ng-if="!wallet.email" translate>Disabled</span>
-          <span ng-if="wallet.email">{{wallet.email}}</span>
-        </span>
-        <i class="icon bp-arrow-right"></i>
-      </a>
       <div class="item item-divider" translate>
         Security
       </div>

www/views/preferencesEmail.html

@@ -1,30 +0,0 @@
-<ion-view class="settings">
-  <ion-nav-bar class="bar-royal">
-    <ion-nav-title>
-      {{'Email Notifications'|translate}}
-    </ion-nav-title>
-    <ion-nav-back-button>
-    </ion-nav-back-button>
-  </ion-nav-bar>
-  <ion-content>
-    <div class="settings-explanation">
-      <div class="settings-description" translate>
-        You'll receive email notifications about payments sent and received from {{wallet.name}}.
-      </div>
-      <a href ng-if="emailForExist" class="settings-description-disabled" ng-click="save(null)" translate>Remove email notifications</a>
-    </div>
-    <form name="emailForm" ng-submit="save(email.value)" novalidate>
-      <div class="list settings-input-group">
-        <label class="item item-input item-stacked-label">
-          <span class="input-label" translate>Email Address</span>
-          <input type="email" id="email" name="email" ng-model="email.value" required></input>
-        </label>
-      </div>
-      <button type="submit"
-              class="button button-standard button-primary"
-              ng-disabled="emailForm.$invalid" translate>
-        Save
-      </button>
-    </form>
-  </ion-content>
-</ion-view>