Turn Off Parenthesis Matching in Sublime Text 2

Set this in your User settings

"auto_match_enabled" : false

You can toggle this setting by adding a key binding to 'Preferences > Key Bindings - User'.
e.g. to make Ctrl+Shift+p toggle the setting, use:

{
    "keys": ["ctrl+shift+p"],
    "command": "toggle_setting",
    "args":
    {
        "setting": "auto_match_enabled"
    }
}