Remove trailing whitespace

S06-parameters/smiley.t

@@ -8,12 +8,12 @@ is { sub a(Int $a)   { $a }; a 42  }(),  42, 'can Int   take an Int:D';
 is { sub a(Int:_ $a) { $a }; a Int }(), Int, 'can Int:_ take an Int:U';
 is { sub a(Int:_ $a) { $a }; a 42  }(),  42, 'can Int:_ take an Int:D';
 is { sub a(Int:U $a) { $a }; a Int }(), Int, 'can Int:U take an Int:U';
-throws-like { sub a(Int:U $a) { $a }; a 42 }, 
+throws-like { sub a(Int:U $a) { $a }; a 42 },
   Exception,                                  'can Int:U take an Int:D';
-throws-like { sub a(Int:D $a) { $a }; a Int }, 
+throws-like { sub a(Int:D $a) { $a }; a Int },
   Exception,                                  'can Int:D take an Int:U';
 is { sub a(Int:D $a) { $a }; a 42  }(),  42, 'can Int:D take an Int:D';
-throws-like 'sub a(Int:foo $a) { $a }', 
+throws-like 'sub a(Int:foo $a) { $a }',
   X::InvalidTypeSmiley,                      'does Int:foo fail';
 
 is { sub a(--> Int)   { Int }; a  }(), Int, 'can --> Int   return an Int:U';
@@ -27,7 +27,7 @@ throws-like { sub a(--> Int:U) {  42 }; a },
 throws-like { sub a(--> Int:D) { Int }; a },
   X::TypeCheck::Return,                     'can --> Int:D return an Int:U';
 is { sub a(--> Int:D) { 42  }; a  }(),  42, 'can --> Int:D return an Int:D';
-throws-like 'sub a(--> Int:foo) { }', 
+throws-like 'sub a(--> Int:foo) { }',
   X::InvalidTypeSmiley,                     'does --> Int:foo fail';
 
 #?rakudo skip 'use parameters is NYI until further notice'
@@ -64,25 +64,25 @@ throws-like 'sub a(--> Int:foo) { }',
 }
 
 #?rakudo 5 skip 'use parameters is NYI until further notice'
-throws-like 'use parameters', 
+throws-like 'use parameters',
   X::Pragma::MustOneOf,
   name => "parameters",
   'does use parameters fail';
-throws-like 'no parameters', 
+throws-like 'no parameters',
   X::Pragma::CannotWhat,
   what => "no",
   name => "parameters",
   'does no parameters fail';
-throws-like 'use parameters "bar"', 
+throws-like 'use parameters "bar"',
   X::Pragma::UnknownArg,
   name => "parameters",
   arg  => "bar",
   'does use parameters "bar" fail';
-throws-like 'use parameters :U, :D', 
+throws-like 'use parameters :U, :D',
   X::Pragma::OnlyOne,
   name => 'parameters',
   'does use parameters :U, :D fail';
-throws-like 'use parameters :foo', 
+throws-like 'use parameters :foo',
   X::InvalidTypeSmiley,
   name => 'foo',
   'does use parameters :foo fail';