<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def remove_blacklisted_directories(self, directories):
 """ Attempts to remove the `directories` from the set of blacklisted directories. If a particular directory is not found in the set of blacklisted, method will continue on silently. `directories` may be a single instance or an iterable. Recommend passing in absolute paths. Method will try to convert to an absolute path if it is not already using the current working directory. """

        directories = util.to_absolute_paths(directories)
        black_dirs = self.blacklisted_directories
        black_dirs = util.remove_from_set(black_dirs, directories)