Revert "Trigger intentional warning in cxx.cc"
diff --git a/src/cxx.cc b/src/cxx.cc
index a4a060c..9983fba 100644
--- a/src/cxx.cc
+++ b/src/cxx.cc
@@ -3,8 +3,6 @@
 #include <iostream>
 #include <memory>
 
-int warning() {}
-
 extern "C" {
 void cxxbridge1$cxx_string$init(std::string *s, const std::uint8_t *ptr,
                                 std::size_t len) noexcept {