remove tar tmp files

Author: willmcgugan

tests/test_tarfs.py

@@ -60,6 +60,7 @@ def make_fs(self):
 
     def destroy_fs(self, fs):
         fs.close()
+        os.remove(fs._tar_file)
         del fs._tar_file
 
 
@@ -92,6 +93,7 @@ def make_fs(self):
 
     def destroy_fs(self, fs):
         fs.close()
+        os.remove(fs._tar_file)
         del fs._tar_file
 
     def assert_is_bzip(self):