[#40] Remove some out of date root-id documentation

Author: Bjwebb

flattentool/cli.py

@@ -50,7 +50,7 @@ def create_parser():
         help="\"Roll up\" columns from subsheets into the main sheet if they are specified in a rollUp attribute in the schema.")
     parser_create_template.add_argument(
         "-r", "--root-id",
-        help="Root ID of the data format, e.g. ocid for OCDS and blank for 360Giving (use --root-id=''). Defaults to ocid.")
+        help="Root ID of the data format, e.g. ocid for OCDS")
     parser_create_template.add_argument(
         "--use-titles",
         action='store_true',
@@ -122,7 +122,7 @@ def create_parser():
         help="Name of the timezone, defaults to UTC. Should be in tzdata format, e.g. Europe/London")
     parser_unflatten.add_argument(
         "-r", "--root-id",
-        help="Root ID of the data format, e.g. ocid for OCDS and blank for 360Giving (use --root-id=''). Defaults to ocid.")
+        help="Root ID of the data format, e.g. ocid for OCDS")
     parser_unflatten.add_argument(
         "-s", "--schema",
         help="Path to a relevant schema.")