[v6.d REVIEW] DSETEM with (:::[])

DSETEM = "Do Not Spec Exact Text of Error Messages". These proved
of little value and were interfering with readability changes in 6.c.
Keep these in Rakudo's tests for now. If other impls need it, we can
always do an Appendix set of tests to the spec that impls can optionally follow.

Test moved to rakudo's suite:
rakudo/rakudo@b7f93bee16

Orig: 5dcda3c

Author: zoffixznet

integration/weird-errors.t

@@ -4,7 +4,7 @@ use lib 't/spec/packages';
 use Test;
 use Test::Util;
 
-plan 33;
+plan 32;
 
 # this used to segfault in rakudo
 is_run(
@@ -157,16 +157,6 @@ throws-like { EVAL '&&::{}[];;' },
   X::Undeclared::Symbols,
   "Doesn't die with weird internal error";
 
-#RT #115326
-{
-    is_run('(:::[])',
-    {
-        out => '',
-        err => { m/"No such symbol ':<>'"/ },
-    },
-    'appropriate error message instead of internal compiler error' );
-}
-
 #RT #127504
 {
     throws-like { "::a".EVAL }, X::NoSuchSymbol, symbol => "a",