Remove old Godot version references to simplify documentation

This follows the documentation writing guidelines, specifically
the "When to refer to a specific Godot version" section.

This also removes warning blocks for a known issue that was resolved in Godot 4.5.

tutorials/scripting/c_sharp/c_sharp_exports.rst

@@ -305,7 +305,7 @@ Color given as red-green-blue value (alpha will always be 1).
 Nodes
 -----
 
-Since Godot 4.0, nodes can be directly exported without having to use NodePaths.
+Nodes can also be directly exported without having to use NodePaths.
 
 .. code-block:: csharp
 

tutorials/scripting/debug/custom_performance_monitors.rst

@@ -11,8 +11,8 @@ As explained in the :ref:`doc_debugger_panel` documentation, Godot features a
 graphs showing their evolution over time. The data for those graphs is sourced
 from the engine's :ref:`class_Performance` singleton.
 
-Since Godot 4.0, you can declare custom values to be displayed in the Monitors
-tab. Example use cases for custom performance monitors include:
+Godot lets you declare custom values to be displayed in the Monitors tab.
+Example use cases for custom performance monitors include:
 
 - Displaying performance metrics that are specific to your project. For
   instance, in a voxel game, you could create a performance monitor to track the

tutorials/scripting/gdscript/gdscript_basics.rst

@@ -859,7 +859,7 @@ Negative indices count from the end.
 Typed arrays
 ^^^^^^^^^^^^
 
-Godot 4.0 added support for typed arrays. On write operations, Godot checks that
+Godot also features support for typed arrays. On write operations, Godot checks that
 element values match the specified type, so the array cannot contain invalid values.
 The GDScript static analyzer takes typed arrays into account, however array methods like
 ``front()`` and ``back()`` still have the ``Variant`` return type.

tutorials/scripting/gdscript/gdscript_exports.rst

@@ -253,8 +253,8 @@ Color given as red-green-blue value (alpha will always be 1). See :ref:`@export_
 Nodes
 -----
 
-Since Godot 4.0, nodes can be directly exported as properties in a script
-without having to use NodePaths:
+Nodes can also be directly exported as properties in a script without
+having to use NodePaths:
 
 ::