fix!: Removed unused parameters from SpriteWidget (#3074)

The unused fields of "SpriteWidget", "srcPosition" and "srcSize" and
their matching parameter in the default constructor has been removed.


If SpriteWidget is used, remove the parameter srcPosition and srcSize as
they have not been used in the default constructor.
(This does not belong to SpriteWidget.asset())

packages/flame/lib/src/widgets/sprite_widget.dart

@@ -19,12 +19,6 @@ class SpriteWidget extends StatelessWidget {
   /// The angle to rotate this [Sprite], in rad. (default = 0)
   final double angle;
 
-  /// Holds the position of the sprite on the image
-  final Vector2? srcPosition;
-
-  /// Holds the size of the sprite on the image
-  final Vector2? srcSize;
-
   /// A builder function that is called if the loading fails
   final WidgetBuilder? errorBuilder;
 
@@ -33,12 +27,13 @@ class SpriteWidget extends StatelessWidget {
 
   final FutureOr<Sprite> _spriteFuture;
 
+  /// renders the [sprite] as a Widget.
+  ///
+  /// To change the source size and position, see [Sprite.new]
   const SpriteWidget({
     required Sprite sprite,
     this.anchor = Anchor.topLeft,
     this.angle = 0,
-    this.srcPosition,
-    this.srcSize,
     this.errorBuilder,
     this.loadingBuilder,
     super.key,
@@ -55,8 +50,8 @@ class SpriteWidget extends StatelessWidget {
     Images? images,
     this.anchor = Anchor.topLeft,
     this.angle = 0,
-    this.srcPosition,
-    this.srcSize,
+    Vector2? srcPosition,
+    Vector2? srcSize,
     this.errorBuilder,
     this.loadingBuilder,
     super.key,