idl: remove param modes decls, as they are now part of 'param'

idl/pEpACIDLang.yml2

@@ -92,18 +92,6 @@ decl throws @name;
 // decl protocol @name;
 // decl construct, new is construct;
 
-// readonly in parm, ownership remains with caller
-// decl use @type @name (mode=use) alias parm;
-
-// inout parm, ownership remains with caller
-// decl supply @type @name (mode=supply) alias parm;
-
-// in parm, ownership goes to callee
-// decl provide @type @name (mode=provide) alias parm;
-
-// factory delivers this, ownership goes to caller
-//decl create @type @name (mode=create) alias parm;
-
 // decl throws @except;
 // decl caveat(mode=caveat) alias doc;