Remove "Show cargo type filter in vehicle lists" setting

src/group_gui.cpp

@@ -414,8 +414,6 @@ public:
 	{
 		this->CreateNestedTree();
 
-		this->CheckCargoFilterEnableState(WID_GL_FILTER_BY_CARGO_SEL, false);
-
 		this->vscroll = this->GetScrollbar(WID_GL_LIST_VEHICLE_SCROLLBAR);
 		this->group_sb = this->GetScrollbar(WID_GL_LIST_GROUP_SCROLLBAR);
 
@@ -532,8 +530,6 @@ public:
 			HideDropDownMenu(this);
 		}
 
-		this->CheckCargoFilterEnableState(WID_GL_FILTER_BY_CARGO_SEL, true);
-
 		this->SetDirty();
 	}