Remove ok and cancel translations

app/src/main/res/values-eu/strings.xml

@@ -663,6 +663,4 @@
     <string name="repeat_type_completion_capitalized">Burutze-data</string>
     <string name="default_location">Lehenetsitako kokalekua</string>
     <string name="always_display_full_date">Erakutsi data osoa</string>
-    <string name="cancel">\@android:string/cancel</string>
-    <string name="ok">\@android:string/ok</string>
 </resources>

app/src/main/res/values-it/strings.xml

@@ -645,8 +645,6 @@
     <string name="date_picker_multiple">Molteplici</string>
     <string name="multi_select_reschedule">Modifica pianificazione</string>
     <string name="always_display_full_date">Mostra data completa</string>
-    <string name="cancel">@android:string/cancel</string>
-    <string name="ok">@android:string/ok</string>
     <string name="custom_filter_has_subtask">Ci sono attività secondarie</string>
     <string name="custom_filter_is_subtask">È un\'attività secondaria</string>
     <string name="purchases_updated">Acquisti aggiornati</string>