title: How to disable/override the enter key for autocomplete?
body: <p>In Sublime Text 3, I want to disable the <kbd>enter</kbd> key to select an item from the autocomplete drop down, and only allow the <kbd>tab</kbd> key to do so.</p>
  
  <p>I found this section in the inbuilt <code>Default (OSX).sublime-keymap</code> file:</p>
  
  <pre><code>{ "keys": ["enter"], "command": "commit_completion", "context":
      [
          { "key": "auto_complete_visible" },
          { "key": "setting.auto_complete_commit_on_tab", "operand": false }
      ]
  },
  </code></pre>
  
  <p>It seems that if I remove this from the config that <kbd>enter</kbd> will not select an item in the drop down. Unfortunately it is not recommended to change this file, and only to override it in my <code>User</code> files. I don't think I actually can edit it without modifying the <code>.app</code> contents.</p>
  
  <p>I tried to override it by removing different sections, and also remove everything except <code>"keys": ["enter"]</code>, but nothing seems to work.</p>
  
  <p>How would I go about achieving this without modifying the inbuilt <code>Default (OSX).sublime-keymap</code> and only the <code>User/Default (OSX).sublime-keymap</code> file?</p>