THRIFT-1349:Remove unnecessary print outs
Client: erl
Patch: Matt Pratt

Removes info_msg log when talking between two versions of generated code.
diff --git a/lib/erl/src/thrift_protocol.erl b/lib/erl/src/thrift_protocol.erl
index 193b07a..c6db46d 100644
--- a/lib/erl/src/thrift_protocol.erl
+++ b/lib/erl/src/thrift_protocol.erl
@@ -208,7 +208,6 @@
                             skip_field(FType, IProto1, SDict, RTuple)
                     end;
                 _Else2 ->
-                    error_logger:info_msg("Skipping field ~p with unknown fid~n", [Fid]),
                     skip_field(FType, IProto1, SDict, RTuple)
             end
     end.