Remove deadnaming, sync BgEvent

berry_fix/payload/include/global.fieldmap.h

@@ -79,23 +79,16 @@ struct CoordEvent
 
 struct BgEvent
 {
-    /*0x00*/u16 x;
-    /*0x02*/u16 y;
-    /*0x04*/u8 elevation;
-    /*0x05*/u8 kind;
-    /*0x08*/union { // carried over from diego's FR/LG work, seems to be the same struct
-        // in gen 3, "kind" (0x3 in BgEvent struct) determines the method to read the union.
+    u16 x, y;
+    u8 elevation;
+    u8 kind; // The "kind" field determines how to access bgUnion union below.
+    union {
         u8 *script;
-
-        // hidden item type
         struct {
             u16 item;
-            u16 hiddenItemId; // flag offset to determine flag lookup
+            u16 hiddenItemId;
         } hiddenItem;
-
-        // secret base type
         u32 secretBaseId;
-
     } bgUnion;
 };