Cao Shufeng a598f14826 remove unused htpasswd ...

This file is not used anywhere.
Further more, this is an error in this file:
```
$ flake8 third_party/htpasswd/htpasswd.py --select=F
third_party/htpasswd/htpasswd.py:46:13: F821 undefined name 'time'
```

2018-03-08 17:59:37 +08:00

..

BUILD

remove unused htpasswd

2018-03-08 17:59:37 +08:00