[infer][PR] Removing references to the previously removed (and now incorrect) '--no-test'
[infer][PR] Removing references to the previously removed (and now incorrect) '--no-test'

Summary:
Signed-off-by: Andrew V. Jones <andrew.jones@vector.com>

## Issue

Commit [068622c](https://github.com/facebook/infer/commit/068622c) renamed the option `test` to be `only-cheap-debug` and also flipped the default value. Therefore, what used to be `--no-test` (i.e., you _do_ want expensive debug information) is now `--no-only-cheap-debug`.

However, [`01-advanced-features.md`](https://github.com/facebook/infer/blob/master/website/docs/01-advanced-features.md) listed the option as `no_test` (with an underscore rather than a hyphen), which I guess got missed when renaming the option/changing the default.

The suggestion to use `--no_test` was recently suggested in [https://github.com/facebook/infer/issues/1252](https://github.com/facebook/infer/issues/1252#issuecomment-618922148), so we should probably remove this, otherwise you get (even if you use the "correct" syntax for an older Infer):

```
$ infer --no-test
/path/to/infer/bin/infer: unknown option '--no-test'.
```

## Description of changes

Given that `only-cheap-debug` now has a default of _false_ (i.e., if you request `-g`/`--debug`, you automatically get `--no-only-cheap-debug`), making the suggestion to users to turn _off_ "no expensive debugging" is not required.

Consequently, this PR removes the recommendation to pass `--no-test`/`--no-only-cheap-debug` in the documentation.
Pull Request resolved: https://github.com/facebook/infer/pull/1253

Reviewed By: ezgicicek

Differential Revision: D21424108

Pulled By: jvillard

fbshipit-source-id: 2b4623380

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