Fixing tests for implicit return

previous commit affected rather many test, as the implicit returns add extra instructions
Also added some explicit returns, so as not to test the return logic too much. return (ie return nl) is a knonwn 3 risc operation.

test/ruby/test_method_statement.rb

@@ -36,21 +36,4 @@ module Ruby
       assert_equal LocalAssignment , lst.body.class
     end
   end
-
-  class TestMethodStatementTrans < MiniTest::Test
-    include RubyTests
-    def setup()
-      input = "def tryout(arg1, arg2) ; a = arg1 ; end "
-      @lst = compile( input ).to_vool
-    end
-    def test_method
-      assert_equal Vool::MethodStatement , @lst.class
-    end
-    def test_method_args
-      assert_equal [:arg1, :arg2] , @lst.args
-    end
-    def test_body_is_scope_zero_statement
-      assert_equal Vool::LocalAssignment , @lst.body.class
-    end
-  end
 end