Yuanfang Chen 63512592e9 [lit] fix a error when using --show-used-features
The error is
```
NotADirectoryError: [Errno 20] Not a directory: '<build-dir>/unittests/Analysis/./AnalysisTests/0/40'
```

Exclude unittests when collecting features because
unittests don't make use of feature keywords.
2022-10-19 10:57:01 -07:00
..
2022-10-10 10:14:17 +02:00
2022-07-26 21:34:45 -07:00
2022-07-13 13:36:16 -07:00