[io grant] Remove two fudged &chdir tests

They were fudged 5 years ago. Seems the intent is to check chdir for
non-existent path fails and not throws, but one test wouldn't work now
even if it were unfudged as a sunk Failure would explode.

Testing of this functionality will be subsumed by the new tests,
to be added shorly.

Author: zoffixznet

S32-io/chdir.t

@@ -1,9 +1,11 @@
 use v6;
+use lib <t/spec/packages/>;
 use Test;
+use Test::Util;
 
 # L<S32::IO/Functions/chdir>
 
-plan 10;
+plan 8;
 
 throws-like ' chdir() ', Exception, 'Cannot call chdir without an argument';
 
@@ -32,16 +34,4 @@ else {
        "Current directory is '$subdir' subfolder (relative)";
 }
 
-my $no_subdir = 'lol does not exist';
-if $no_subdir.IO ~~ :d {
-    skip "subdir '$no_subdir' does exist, actually.", 2;
-}
-else {
-    #?rakudo 2 skip 'spec non-conformance due to missing sink context'
-    lives-ok { chdir("$no_subdir") },
-             'chdir to a non-existent does not by default throw an exception';
-    ok !chdir("$no_subdir"),
-       'change to non-existent directory gives a false value';
-}
-
 # vim: ft=perl6