schema parser DOC remove misleading comment

Fixes #1610
diff --git a/src/parser_schema.h b/src/parser_schema.h
index ae021be..70d7121 100644
--- a/src/parser_schema.h
+++ b/src/parser_schema.h
@@ -113,7 +113,7 @@
  *
  * @param[in] ctx libyang context where to process the data model.
  * @param[in] data The string containing the dumped data model in the specified format.
- * @param[in] format Format of the schema to parse. Can be 0 to try to detect format from the input handler.
+ * @param[in] format Format of the schema to parse.
  * @param[out] module Optional parsed module.
  * @return LY_ERR value.
  */
@@ -130,7 +130,7 @@
  * @param[in] ctx libyang context where to process the data model.
  * @param[in] fd File descriptor of a regular file (e.g. sockets are not supported) containing the schema
  *            in the specified format.
- * @param[in] format Format of the schema to parse. Can be 0 to try to detect format from the input handler.
+ * @param[in] format Format of the schema to parse.
  * @param[out] module Optional parsed module.
  * @return LY_ERR value.
  */
@@ -144,7 +144,7 @@
  *
  * @param[in] ctx libyang context where to process the data model.
  * @param[in] path Path to the file with the model in the specified format.
- * @param[in] format Format of the schema to parse. Can be 0 to try to detect format from the input handler.
+ * @param[in] format Format of the schema to parse.
  * @param[out] module Optional parsed module.
  * @return LY_ERR value.
  */