[FIX] auth_oauth: do not transfer `debug` flag to OAuth provider

This parameter is not part of the spec [1] and may not be supported by
all OAuth providers.

[1] http://tools.ietf.org/html/rfc6749#section-4.2.1

addons/auth_oauth/controllers/main.py

@@ -56,7 +56,6 @@ class OAuthLogin(openerp.addons.web.controllers.main.Home):
             return_url = request.httprequest.url_root + 'auth_oauth/signin'
             state = self.get_state(provider)
             params = dict(
-                debug=request.debug,
                 response_type='token',
                 client_id=provider['client_id'],
                 redirect_uri=return_url,