Update matrices_and_transforms.rst (#6922)

Remove mention of Spatial matrix being transposed in Godot 3.2. Keep note being unable to edit Node2D's matrix in the Inspector.

Author: Skyvastern

tutorials/math/matrices_and_transforms.rst

@@ -606,12 +606,7 @@ this project which has colored lines and cubes to help visualize the
 :ref:`class_Basis` vectors and the origin in both 2D and 3D:
 https://github.com/godotengine/godot-demo-projects/tree/master/misc/matrix_transform
 
-.. note:: Spatial's "Matrix" section in Godot 3.2's inspector
-          displays the matrix as transposed, with the columns
-          horizontal and the rows vertical. This may be changed
-          to be less confusing in a future release of Godot.
-
-.. note:: You cannot edit Node2D's transform matrix directly in Godot 3.2's
+.. note:: You cannot edit Node2D's transform matrix directly in Godot 4.0's
           inspector. This may be changed in a future release of Godot.
 
 If you would like additional explanation, you should check out