swift234

[build-presets] Remove unknown tvOS build param

The parameter `swift-enable-target-appletvos` is not recognized by
`build-script-impl`. Running the build-script with this preset results
in the error:

```
Error: Unknown setting: swift-enable-target-appletvos
```

Remove the unknown parameter, as well as every preset that references
it. These presets would have failed if they had ever been run, so they
must not have been run at all. No point in keeping presets around if
they're not being run!