Simplify highlight style (geom only)

app/map_styles/polygon.xml

@@ -35,7 +35,6 @@
     </Style>
     <Style name="highlight">
         <Rule>
-            <Filter>[focus] = true</Filter>
             <LineSymbolizer stroke="#00ffffaa" stroke-width="4.5" />
             <LineSymbolizer stroke="#00ffffff" stroke-width="2.5" />
         </Rule>

app/src/tiles/tile.js

@@ -182,13 +182,11 @@ function render_tile(tileset, z, x, y, geometry_id, cb){
 function get_highlight_table_def(geometry_id) {
     return `(
         SELECT
-            g.geometry_id = ${geometry_id} as focus,
             g.geometry_geom
         FROM
-            geometries as g,
-            buildings as b
+            geometries as g
         WHERE
-            g.geometry_id = b.geometry_id
+            g.geometry_id = ${geometry_id}
     ) as highlight`
 }