Remove attribute(__unused__) usage

Just omitting the parameter name is more portable and less to write

1 files changed, 1 insertions, 1 deletions

diff --git a/src/logger.cc b/src/logger.cc
index df1af0c..e04b588 100644
--- a/src/logger.cc
+++ b/src/logger.cc
@@ -129,7 +129,7 @@ private:
 
 class NullLogger : public Logger {
 public:
-  void out(Level UNUSED(lvl), char const* UNUSED(format), ...) override {
+  void out(Level, char const*, ...) override {
   }
 };