Remove memdelete of button in GIProbeEditor exit

This issue was causing a heap corruption on windows.

tools/editor/plugins/gi_probe_editor_plugin.cpp

@@ -80,6 +80,4 @@ GIProbeEditorPlugin::GIProbeEditorPlugin(EditorNode *p_node) {
 
 
 GIProbeEditorPlugin::~GIProbeEditorPlugin() {
-
-	memdelete(bake);
 }