Remove print statement

This print statement should either be delated, as I did here, or if it must be kept should be properly logged at an INFO level so that gradle builds that are at the WARN level do not see this.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/cexport/CAdapterApiExporter.kt

@@ -245,7 +245,6 @@ internal class CAdapterApiExporter(
         output("#endif  /* KONAN_${prefix.uppercase()}_H */")
 
         outputStreamWriter.close()
-        println("Produced library API in ${prefix}_api.h")
 
         outputStreamWriter = cppAdapterFile.printWriter()