Tokenizer: moved test-only tokenize() to SimpleTokenizer / several cleanups
#14789
| Job | Run time |
|---|---|
| 5m 31s | |
| 7m 27s | |
| 2m 11s | |
| 5m 24s | |
| 2m 9s | |
| 5m 17s | |
| 2m 19s | |
| 1m 45s | |
| 32m 3s |