Don't include "Returns ..." in function description.

The description of what it returns is already produced by the
generator.

This fixes commit e85b1eaa268caea316f6aa8e02738b3d94297250.

diff --git a/generator/generator.ml b/generator/generator.ml
index b6fb8b3..def516f 100755 (executable)
--- a/generator/generator.ml
+++ b/generator/generator.ml
@@ -265,14 +265,12 @@ you know the type in advance.";
   "node_struct_length", (RSize, [AHive; ANode "node"]),
     "return the length of a node",
     "\
-Return the length of the node data structure.  Returns 0
-and sets errno on error.";
+Return the length of the node data structure.";
 
   "value_struct_length", (RSize, [AHive; AValue "val"]),
     "return the length of a value data structure",
     "\
-Return the length of the value data structure.  Returns 0
-and sets errno on error.";
+Return the length of the value data structure.";
 
   "value_value", (RLenTypeVal, [AHive; AValue "val"]),
     "return data length, data type and data of a value",