Platform adhesion is now handled by inherit function

Based on suggestion by ghostkeeper CURA-1068

resources/machines/fdmprinter.json

@@ -1554,6 +1554,7 @@
                         "raft": "Raft"
                     },
                     "default": "skirt",
+                    "inherit_function": "\"skirt\" if machine_heated_bed else \"brim\"",
                     "global_only": "True"
                 },
                 "skirt_line_count": {

resources/machines/ultimaker2_go.json

@@ -22,8 +22,5 @@
             [[ 60.0, -60.0], [ 33.0, -60.0], [ 35.0, -52.0], [ 60.0, -52.0]]
         ]},
         "machine_platform_offset": { "default": [0.0, 0.0, 0.0] }
-    },
-    "overrides": {
-        "adhesion_type":{"default": "brim"}
     }
 }

resources/machines/ultimaker_original.json

@@ -79,8 +79,5 @@
         },
 
         "machine_extruder_drive_upgrade": { "default": false }
-    },
-    "overrides": {
-        "adhesion_type":{"default": "brim"}
     }
 }