Unspec zero-denominator Rationals leaving numerator untouched

This test was added earlier today and is not part of 6.c spec.

There are some math issues and we might want to solve them by normalizing
newly-created zero-denomiator Rationals into <-1 0 1> numerators:
R#1354 rakudo/rakudo#1354

S32-num/rat.t

@@ -3,7 +3,7 @@ use lib <t/spec/packages>;
 use Test;
 use Test::Util;
 
-plan 850;
+plan 849;
 
 # Basic test functions specific to rational numbers.
 
@@ -189,26 +189,6 @@ subtest '±Inf/NaN ⇿ Rat' => {
     }
 }
 
-subtest 'Zero-denominator Rationals leave numerator at its original value' => {
-    plan 12;
-
-    is-deeply  <0/0>.nude, (0,  0),  'NaN-y Rat literal';
-    is-deeply <42/0>.nude, (42, 0),  'Inf-y Rat literal';
-    is-deeply <-4/0>.nude, (-4, 0), '-Inf-y Rat literal';
-
-    is-deeply  (0/0).nude, (0,  0),  'NaN-y Rat /-calculation';
-    is-deeply (42/0).nude, (42, 0),  'Inf-y Rat /-calculation';
-    is-deeply (-4/0).nude, (-4, 0), '-Inf-y Rat /-calculation';
-
-    is-deeply Rat.new(0,  0).nude, (0,  0),  'NaN-y Rat.new';
-    is-deeply Rat.new(42, 0).nude, (42, 0),  'Inf-y Rat.new';
-    is-deeply Rat.new(-4, 0).nude, (-4, 0), '-Inf-y Rat.new';
-
-    is-deeply FatRat.new(0,  0).nude, (0,  0),  'NaN-y FatRat.new';
-    is-deeply FatRat.new(42, 0).nude, (42, 0),  'Inf-y FatRat.new';
-    is-deeply FatRat.new(-4, 0).nude, (-4, 0), '-Inf-y FatRat.new';
-}
-
 # RT #74648
 throws-like { Inf.Int / 1 }, X::Numeric::CannotConvert, 'Inf.Int / 1 throws';