rm block in mvalue

ccmeta.leg

@@ -2168,10 +2168,8 @@ metaCatch     = META_AT ( META_IMPORT s:META_STRING ";"             { inputStack
                         | META_LCB   s:mstmts                       { map_append(outputProgram, s); $$= null        }
                         )
 
-
 mvalue        = i:META_IDENT                                        { $$= eval(globals, newGetVariable(i)) }
               | META_LPAREN ( i:MO_OPERATION 
-                            #| i:meta_block   usefull ?
                             | i:meta_exp     
                             ) META_RPAREN                           { $$= eval(globals, i) }