Tighter bounds and drop coarse network

stats-config.json

@@ -10,10 +10,6 @@
                 "detailed": {
                     "tileset": "sw",
                     "bounds": "-2.258958,51.943094,-2.047605,52.054891"
-                },
-                "coarse": {
-                    "tileset": "sw-coarse",
-                    "bounds": "-2.398126,51.801561,-1.902209,52.096383"
                 }
             },
             "transit": {