Remove unused duplicate wireframe shortcut, fixes #18067

It also happens to do nothing currently.

editor/plugins/spatial_editor_plugin.cpp

@@ -5082,8 +5082,6 @@ SpatialEditor::SpatialEditor(EditorNode *p_editor) {
 	ED_SHORTCUT("spatial_editor/tool_rotate", TTR("Tool Rotate"), KEY_E);
 	ED_SHORTCUT("spatial_editor/tool_scale", TTR("Tool Scale"), KEY_R);
 
-	ED_SHORTCUT("spatial_editor/display_wireframe", TTR("Display Wireframe"), KEY_Z);
-
 	ED_SHORTCUT("spatial_editor/freelook_toggle", TTR("Toggle Freelook"), KEY_MASK_SHIFT + KEY_F);
 
 	PopupMenu *p;