Use tmpdir for memmaps. (#599)

nimare/utils.py

@@ -675,7 +675,6 @@ def use_memmap(logger, n_files=1):
     Files generated by this function will be stored in the NiMARE data directory and will be
     removed after the wrapped method finishes.
     """
-    from .extract.utils import _get_dataset_dir
 
     def inner_function(function):
         @wraps(function)
@@ -684,10 +683,7 @@ def memmap_context(self, *args, **kwargs):
                 self.memmap_filenames, filenames = [], []
                 for i_file in range(n_files):
                     start_time = datetime.datetime.now().strftime("%Y%m%dT%H%M%S")
-                    dataset_dir = _get_dataset_dir("temporary_files", data_dir=None)
-                    _, filename = mkstemp(
-                        prefix=self.__class__.__name__, suffix=start_time, dir=dataset_dir
-                    )
+                    _, filename = mkstemp(prefix=self.__class__.__name__, suffix=start_time)
                     logger.debug(f"Temporary file written to {filename}")
                     self.memmap_filenames.append(filename)
                     filenames.append(filename)