[FIX] raise statements

In Python 3, `raise` can take:
* nothing (reraises)
* an exception *instance*
* an exception instance `from` a traceback

The Python 2 forms `raise type, instance` and
`raise type, instance, traceback` are deprecated and should be replaced.

Fixers:
    libfuturize.fixes.fix_raise

#8530

addons/account/wizard/account_report_common.py

@@ -25,7 +25,7 @@ class AccountCommonReport(models.TransientModel):
         return result
 
     def _print_report(self, data):
-        raise (_('Error!'), _('Not implemented.'))
+        raise NotImplementedError()
 
     @api.multi
     def check_report(self):

odoo/service/report.py

@@ -141,6 +141,6 @@ def exp_report_get(db, uid, report_id):
         if self_reports[report_id]['uid'] == uid:
             return _check_report(report_id)
         else:
-            raise Exception, 'AccessDenied'
+            raise Exception('AccessDenied')
     else:
-        raise Exception, 'ReportNotFound'
+        raise Exception('ReportNotFound')