controller: Fix performance-move-const-arg

```
/home/andrew/src/openbmc/phosphor-led-sysfs/build/../controller.cpp:97:17: error: std::move of the const expression has no effect; remove std::move() [performance-move-const-arg,-warnings-as-errors]
    auto path = std::move((options)["path"]);
                ^~~~~~~~~~                 ~
```

Change-Id: I5a26c0b9fa7fcd3d07a2495eeeb5cd0a1e089ceb
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
1 file changed