Remove traces of the extinct RID preallocate feature

core/config/project_settings.cpp

@@ -1462,7 +1462,6 @@ ProjectSettings::ProjectSettings() {
 	GLOBAL_DEF("debug/settings/crash_handler/message.editor",
 			String("Please include this when reporting the bug on: https://github.com/godotengine/godot/issues"));
 	GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "rendering/occlusion_culling/bvh_build_quality", PROPERTY_HINT_ENUM, "Low,Medium,High"), 2);
-	GLOBAL_DEF(PropertyInfo(Variant::INT, "memory/limits/multithreaded_server/rid_pool_prealloc", PROPERTY_HINT_RANGE, "0,500,1"), 60); // No negative and limit to 500 due to crashes.
 	GLOBAL_DEF_RST("internationalization/rendering/force_right_to_left_layout_direction", false);
 	GLOBAL_DEF_BASIC(PropertyInfo(Variant::INT, "internationalization/rendering/root_node_layout_direction", PROPERTY_HINT_ENUM, "Based on Application Locale,Left-to-Right,Right-to-Left,Based on System Locale"), 0);
 

doc/classes/ProjectSettings.xml

@@ -1993,9 +1993,6 @@
 		<member name="memory/limits/message_queue/max_size_mb" type="int" setter="" getter="" default="32">
 			Godot uses a message queue to defer some function calls. If you run out of space on it (you will see an error), you can increase the size here.
 		</member>
-		<member name="memory/limits/multithreaded_server/rid_pool_prealloc" type="int" setter="" getter="" default="60">
-			This is used by servers when used in multi-threading mode (servers and visual). RIDs are preallocated to avoid stalling the server requesting them on threads. If servers get stalled too often when loading resources in a thread, increase this number.
-		</member>
 		<member name="navigation/2d/default_cell_size" type="float" setter="" getter="" default="1.0">
 			Default cell size for 2D navigation maps. See [method NavigationServer2D.map_set_cell_size].
 		</member>

servers/physics_server_2d_wrap_mt.cpp

@@ -120,8 +120,6 @@ PhysicsServer2DWrapMT::PhysicsServer2DWrapMT(PhysicsServer2D *p_contained, bool
 	physics_server_2d = p_contained;
 	create_thread = p_create_thread;
 
-	pool_max_size = GLOBAL_GET("memory/limits/multithreaded_server/rid_pool_prealloc");
-
 	if (!p_create_thread) {
 		server_thread = Thread::get_caller_id();
 	} else {

servers/physics_server_2d_wrap_mt.h

@@ -66,7 +66,6 @@ class PhysicsServer2DWrapMT : public PhysicsServer2D {
 	bool first_frame = true;
 
 	Mutex alloc_mutex;
-	int pool_max_size = 0;
 
 public:
 #define ServerName PhysicsServer2D

servers/physics_server_3d_wrap_mt.cpp

@@ -120,8 +120,6 @@ PhysicsServer3DWrapMT::PhysicsServer3DWrapMT(PhysicsServer3D *p_contained, bool
 	physics_server_3d = p_contained;
 	create_thread = p_create_thread;
 
-	pool_max_size = GLOBAL_GET("memory/limits/multithreaded_server/rid_pool_prealloc");
-
 	if (!p_create_thread) {
 		server_thread = Thread::get_caller_id();
 	} else {

servers/physics_server_3d_wrap_mt.h

@@ -65,7 +65,6 @@ class PhysicsServer3DWrapMT : public PhysicsServer3D {
 	bool first_frame = true;
 
 	Mutex alloc_mutex;
-	int pool_max_size = 0;
 
 public:
 #define ServerName PhysicsServer3D