remove URL field from wallet as seen and edited

templates/walletform.html

@@ -179,12 +179,7 @@
            label = "People" name = "people" size ="{{peoplesize}}"
            title="List of people on the survey trip"
            placeholder="{{people}}" value="{{people}}" /> 
-    <br>
-           <label for="url">URL of survey area (only needed if not a cave)</label>
-           <input 
-           label = "URL" name = "url" size ="{{urlsize}}"
-           title="URL of cave description, e.g. /1623/264/264.html"
-           placeholder="{{url}}" value="{{url}}"  /> 
+
     <br>
            <label for="survex">List of survex files</label>
            <input