[lldb][test][NFC] Remove BOM characters from tests (#97045)

These handful of tests had a BOM (Byte order mark) at the beginning of
the file. This marker is unnecessary in our test files. The main
motivation for this is that the `ast` python module breaks when passing
a file to it with a BOM marker (and might break other tooling which
doesn't expect it). E.g.,:
```
"""Test that lldb command 'process signal SIGUSR1' to send a signal to the inferior works."""
^
SyntaxError: invalid non-printable character U+FEFF
```

If anyone is aware of a good reason to keep it, happy to drop this.

0 files changed, 0 insertions, 0 deletions