Remove no longer needed canary test

Should have been removed with the previous commit 94857d4.

integration/gather-with-loops.t

@@ -4,15 +4,10 @@ use Test;
 use lib $?FILE.IO.parent(2).add("packages/Test-Helpers");
 use Test::Util;
 
-plan 22;
+plan 21;
 
 # https://github.com/rakudo/rakudo/issues/3634
 
-## canary test to notice that bug is fixed
-is_run q[gather for ^1 { take 42; last }],
-    { status => 0, err => '', out => ''},
-    'golfed code does not blow up';
-
 ## last in loop
 {
     my $res = gather loop { take 42; last };