Remove classes that were dropped on 4.2

Plugins/CodeGeneratorPlugin/plugin.swift

@@ -1,4 +1,4 @@
-//
+///
 // Generator's Plugin definition.swift
 //  
 //
@@ -337,17 +337,13 @@ let known = [
     "GDExtension.swift",
     "GDExtensionManager.swift",
     "GDScript.swift",
-    "GDScriptEditorTranslationParserPlugin.swift",
-    "GDScriptNativeClass.swift",
     "GLTFAccessor.swift",
     "GLTFAnimation.swift",
     "GLTFBufferView.swift",
     "GLTFCamera.swift",
     "GLTFDocument.swift",
     "GLTFDocumentExtension.swift",
     "GLTFDocumentExtensionConvertImporterMesh.swift",
-    "GLTFDocumentExtensionPhysics.swift",
-    "GLTFDocumentExtensionTextureWebP.swift",
     "GLTFLight.swift",
     "GLTFMesh.swift",
     "GLTFNode.swift",
@@ -374,8 +370,6 @@ let known = [
     "Geometry2D.swift",
     "Geometry3D.swift",
     "GeometryInstance3D.swift",
-    "GodotPhysicsServer2D.swift",
-    "GodotPhysicsServer3D.swift",
     "Gradient.swift",
     "GradientTexture1D.swift",
     "GradientTexture2D.swift",
@@ -398,7 +392,6 @@ let known = [
     "HeightMapShape3D.swift",
     "HingeJoint3D.swift",
     "IP.swift",
-    "IPUnix.swift",
     "Image.swift",
     "ImageFormatLoader.swift",
     "ImageFormatLoaderExtension.swift",
@@ -475,8 +468,6 @@ let known = [
     "MissingResource.swift",
     "MobileVRInterface.swift",
     "MovieWriter.swift",
-    "MovieWriterMJPEG.swift",
-    "MovieWriterPNGWAV.swift",
     "MultiMesh.swift",
     "MultiMeshInstance2D.swift",
     "MultiMeshInstance3D.swift",
@@ -649,7 +640,6 @@ let known = [
     "RenderingDevice.swift",
     "RenderingServer.swift",
     "Resource.swift",
-    "ResourceFormatImporterSaver.swift",
     "ResourceFormatLoader.swift",
     "ResourceFormatSaver.swift",
     "ResourceImporter.swift",