Revert "skip test when Class::C3::XS is needed (RT#113704)"

This reverts commit 7108fd5.

Changes

@@ -3,6 +3,10 @@ for, noteworthy changes.
 
 {{$NEXT}}
 
+  [TESTS]
+
+  - restore test on perl 5.8.x when Class::C3::XS is not installed (RT#113704)
+
 2.1703   2016-04-12 (TRIAL RELEASE)
 
   [TESTS]

t/cmop/methods.t

@@ -4,12 +4,6 @@ use warnings;
 use Test::More;
 use Test::Fatal;
 
-BEGIN {
-    # see RT#113704
-    plan skip_all => 'Need Class::C3::XS, at least for these tests, when mro is not available'
-        if $] < '5.010' and not eval { require Class::C3::XS; 1 };
-}
-
 use Scalar::Util qw/reftype/;
 use Sub::Name;