[LoTW] Removing the option to import new qsos from LoTW

Removing the option to import new qsos from LoTW this is because LoTW keep changing how they output and its not predictable.

application/views/lotw/import.php

@@ -41,7 +41,7 @@
           </div>
       </div>
       <br/>
-      <div class="form-group row">
+      <div class="form-group row" style="display: none">
           <div class="col-md-10">
               <div class="form-check-inline">
                   <input class="form-check-input" type="checkbox" name="importMissing" value="1" id="importMissing">