Unregister GDScriptFunctionState class

This is not user accessible anymore so it does not need to be show in
documentation.

modules/gdscript/config.py

@@ -10,7 +10,6 @@ def get_doc_classes():
     return [
         "@GDScript",
         "GDScript",
-        "GDScriptFunctionState",
     ]
 
 

modules/gdscript/doc_classes/GDScriptFunctionState.xml

@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<class name="GDScriptFunctionState" inherits="Reference" version="4.0">
-	<brief_description>
-		State of a function call after yielding.
-	</brief_description>
-	<description>
-		FIXME: Outdated docs as of GDScript rewrite in 4.0.
-		Calling [code]yield[/code] within a function will cause that function to yield and return its current state as an object of this type. The yielded function call can then be resumed later by calling [method resume] on this state object.
-	</description>
-	<tutorials>
-	</tutorials>
-	<methods>
-		<method name="is_valid" qualifiers="const">
-			<return type="bool">
-			</return>
-			<argument index="0" name="extended_check" type="bool" default="false">
-			</argument>
-			<description>
-				Check whether the function call may be resumed. This is not the case if the function state was already resumed.
-				If [code]extended_check[/code] is enabled, it also checks if the associated script and object still exist. The extended check is done in debug mode as part of [method GDScriptFunctionState.resume], but you can use this if you know you may be trying to resume without knowing for sure the object and/or script have survived up to that point.
-			</description>
-		</method>
-		<method name="resume">
-			<return type="Variant">
-			</return>
-			<argument index="0" name="arg" type="Variant" default="null">
-			</argument>
-			<description>
-				Resume execution of the yielded function call.
-				If handed an argument, return the argument from the [code]yield[/code] call in the yielded function call. You can pass e.g. an [Array] to hand multiple arguments.
-				This function returns what the resumed function call returns, possibly another function state if yielded again.
-			</description>
-		</method>
-	</methods>
-	<signals>
-		<signal name="completed">
-			<argument index="0" name="result" type="Variant">
-			</argument>
-			<description>
-			</description>
-		</signal>
-	</signals>
-	<constants>
-	</constants>
-</class>

modules/gdscript/register_types.cpp

@@ -112,7 +112,6 @@ static void _editor_init() {
 
 void register_gdscript_types() {
 	ClassDB::register_class<GDScript>();
-	ClassDB::register_virtual_class<GDScriptFunctionState>();
 
 	script_language_gd = memnew(GDScriptLanguage);
 	ScriptServer::register_language(script_language_gd);