Fix fields

ldtk.odin

@@ -164,17 +164,14 @@ Level :: struct {
     // The "guessed" color for this level in the editor, decided using either the background
     // color or an existing custom field.
     smart_color:         string `json:"__smartColor"`,
-    // Background color of the level. If `nil`, the project `defaultLevelBgColor` should be
-    // used.
-    level_bg_color:      Maybe(string) `json:"levelBgColor"`,
     // Background image X pivot (0-1)
     bg_pivot_x:          f32 `json:"bgPivotX"`,
     // Background image Y pivot (0-1)
     bg_pivot_y:          f32 `json:"bgPivotY"`,
     // An enum defining the way the background image (if any) is positioned on the level. See
     // `__bgPos` for resulting position info. Possible values: <`nil`>, `Unscaled`,
     // `Contain`, `Cover`, `CoverDirty`, `Repeat`
-    level_bg_pos_type:   Maybe(Bg_Pos) `json:"levelBgPos"`,
+    bg_pos_type:         Maybe(Bg_Pos) `json:"levelBgPos"`,
     // The *optional* relative path to the level background image.
     bg_rel_path:         Maybe(string) `json:"bgRelPath"`,
     // This value is not nil if the project option "*Save levels separately*" is enabled. In