diff --git a/bbcli/commands/contents.py b/bbcli/commands/contents.py
index 8aec8c15bf96a5eef66bfcf85e8f4578f4cbc38b..f558e0bfc89460ea0e31c333d87b9c62136a88e3 100644
--- a/bbcli/commands/contents.py
+++ b/bbcli/commands/contents.py
@@ -7,13 +7,10 @@ import click
 import concurrent.futures
 
 from bbcli.entities.Node import Node
-from bbcli.utils.URL_builder import URL_builder
 from bbcli.utils import content_utils
 from bbcli.utils.content_handler import content_handler
 from bbcli.views import contents_view
 
-url_builder = URL_builder()
-
 def standard_options(function):
     function = click.option('-h', '--hide-content', is_flag=True,
                             help='Hide content for students')(function)
diff --git a/bbcli/string_builder.py b/bbcli/string_builder.py
deleted file mode 100644
index 1b671afc40b4912eb574ce850b386671f52176e5..0000000000000000000000000000000000000000
--- a/bbcli/string_builder.py
+++ /dev/null
@@ -1,14 +0,0 @@
-from io import StringIO
-
-
-class StringBuilder:
-    _file_str = None
-
-    def __init__(self):
-        self._file_str = StringIO()
-
-    def append(self, str):
-        self._file_str.write(str)
-
-    def __str__(self):
-        return self._file_str.getvalue()