boost recipe now exceeds RECIPE FOLDER SIZE (KB-H009)

With conan-io/conan-center-index#16930 the boost recipe now gained its own gravitational pull:

```
[HOOK - conan-center.py] pre_export(): ERROR: [RECIPE FOLDER SIZE (KB-H009)] The size of your recipe folder (305.5400390625 KB) is larger than the maximum allowed size (256KB).
```

What's the proper thing to do now?