To completely disable the wrapping:
Settings > Editor: Word Wrap > Off
To set the wrapping to the 160th column:
Settings > Editor: Word Wrap > wordWrapColumn
Settings > Editor: Word Wrap Column > 160
Or add the following to your settings.json:
"editor.wordWrap": "wordWrapColumn",
"editor.wordWrapColumn": 160
You can open the settings file by pressing F1 and typing settings.json.