Tiny patch which removes username and password from the logs

The logs log out the entire remote, including the couchdb username and password if any ie:
before :
```bash
 TDPusher[http://adminuser:supersecretpassswordnotsosecretanymore@yourcouch.iriscouch.com/yourdb] STARTING ...
02-19 23:23:59.010: V/TDDatabase(4135): Making request to http://adminuser:supersecretpassswordnotsosecretanymore@yourcouch.iriscouch.com/yourdb/_changes?feed=longpoll&limit=50&heartbeat=300000&since=1
```
now:
```bash
 02-19 21:34:07.480: V/TDDatabase(2325): TDPusher[http://---:---@yourcouch.iriscouch.com/yourdb] STARTING ...
02-19 23:23:59.010: V/TDDatabase(4135): Making request to http://---:---@yourcouch.iriscouch.com/yourdb/_changes?feed=longpoll&limit=50&heartbeat=300000&since=1
```