remove obsolete strings

OsmAnd/res/values-ca/strings.xml

@@ -2045,7 +2045,6 @@ Per retornar a l\'estil habitual dels mapes d\'OsmAnd, només cal desactivar aqu
  	<string name="app_mode_train">Tren</string>
     <string name="coords_format">Format de coordenades</string>
     <string name="coords_format_descr">Format de les coordenades geogràfiques</string>
-  	<string name="shared_string_open_POIs">PDIs oberts</string>
 	<string name="shared_string_open_24_7">Obert 24h/7d</string>
     <string name="storage_directory_card">Tarja de memòria</string>
     <string name="shared_string_is_open">Obert</string>

OsmAnd/res/values-da/strings.xml

@@ -2382,6 +2382,5 @@
     <string name="coords_format">Koordinatformat</string>
     <string name="coords_format_descr">Format for geografiske koordinater</string>
   	<string name="storage_directory_card">Hukommelseskort</string>
-    <string name="shared_string_open_POIs">Åben IP\'er</string>
 	<string name="shared_string_open_24_7">Åben 24/7</string>
     </resources>

OsmAnd/res/values-fr/strings.xml

@@ -2238,6 +2238,5 @@
     <string name="coords_format">Format des coordonnées</string>
     <string name="coords_format_descr">Format des coordonnées géographiques</string>
   	<string name="storage_directory_card">Carte mémoire</string>
-    <string name="shared_string_open_POIs">Ouvrir les PI</string>
 	<string name="shared_string_open_24_7">Ouvert 24/7</string>
     </resources>

OsmAnd/res/values/strings.xml

@@ -9,7 +9,6 @@
          3. All your modified/created strings are in the top of the file (to make easier find what\'s translated).
     PLEASE: Have a look at http://code.google.com/p/osmand/wiki/UIConsistency, it may really improve your and our work  :-)  Thx - Hardy
     -->
-	<string name="shared_string_is_open">Open</string>
     <string name="storage_directory_card">Memory card</string>
     <string name="coords_format">Coordinate format</string>
     <string name="coords_format_descr">Format for the geographical coordinates</string>