An user with role teacher doesn't have permissions to remove a submission from a student in an assignment.

In demo (school) I cannot put debug but an error message its' shown:
error/nopermission

More information about this error

In a 3.8dev (master):
error/nopermission

More information about this error
 
Debug info:
Error code: nopermission
$a contents:
 
Stack trace:

• line 494 of /lib/setuplib.php: moodle_exception thrown
• line 7869 of /mod/assign/locallib.php: call to print_error()
• line 7954 of /mod/assign/locallib.php: call to assign->remove_submission()
• line 4893 of /mod/assign/locallib.php: call to assign->process_remove_submission()
• line 530 of /mod/assign/locallib.php: call to assign->process_grading_batch_operation()
• line 55 of /mod/assign/view.php: call to assign->view()