remove other input types

```
people find it confusing to have multiple options as input data.


What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?


Please use labels and text to provide additional information.


```

Original issue reported on code.google.com by `hong1.cui@gmail.com` on 7 Nov 2013 at 6:46
