Delete duplicate doc for Salt masterless provisionner

there is a other doc file for this called salt.html.markdown which contain a better history

website/source/docs/provisioners/salt-masterless.html.markdown

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-layout: "docs"
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-
-# Salt Masterless Provisioner
-
-Type: `salt-masterless`
-
-The salt-masterless provisioner provisions machines built by Packer using [Salt](http://saltstack.com/) states.
-
-## Basic Example
-
-The example below is fully functional.
-
-<pre class="prettyprint">
-{
-    "type": "salt-masterless",
-    "bootstrap_args": "git v0.16.0"
-    "local_state_tree": "/Users/me/salt"
-}
-</pre>
-
-## Configuration Reference
-
-The reference of available configuration options is listed below. The only required argument is the path to your local salt state tree.
-
-Required:
-
-* `local_state_tree` (string) - The path to your local [state tree](http://docs.saltstack.com/ref/states/highstate.html#the-salt-state-tree). This will be uploaded to the `/srv/salt` on the remote, and removed before shutdown.
-
-Optional:
-
-* `skip_bootstrap` (boolean) - By default the salt provisioner runs [salt bootstrap](https://github.com/saltstack/salt-bootstrap) to install salt. Set this to true to skip this step.
-
-* `boostrap_args` (string) -
-  Arguments to send to the bootstrap script. Usage is somewhat documented on [github](https://github.com/saltstack/salt-bootstrap), but the [script itself](https://github.com/saltstack/salt-bootstrap/blob/develop/bootstrap-salt.sh) has more detailed usage instructions. By default, no arguments are sent to the script.
-
-* `temp_config_dir` (string) - Where your local state tree will be copied before moving to the `/srv/salt` directory. Default is `/tmp/salt`.