Turn on <after ...> tests.

Author: jnthn

S05-metasyntax/lookaround.t

@@ -14,7 +14,6 @@ plan 10;
 
 # L<S05/Extensible metasyntax (C<< <...> >>)/The special named assertions include:>
 
-#?rakudo 4 skip 'after NYI'
 ok("a cdef" ~~ m/<after a <.ws> c> def/, 'Lookbehind');
 ok(!( "acdef" ~~ m/<after a <.ws> c> def/ ), 'Lookbehind failure');
 ok(!( "a cdef" ~~ m/<!after a <.ws> c> def/ ), 'Negative lookbehind failure');