Completely removed the transaction checker in release (which was here but as a noop checker)

src/libs/database/CMakeLists.txt

@@ -18,12 +18,15 @@ add_library(lmsdatabase SHARED
 	impl/SqlQuery.cpp
 	impl/Track.cpp
 	impl/TrackBookmark.cpp
-	impl/TransactionChecker.cpp
 	impl/Types.cpp
 	impl/User.cpp
 	impl/Utils.cpp
 	)
 
+if (CMAKE_BUILD_TYPE MATCHES "Debug")
+target_sources(lmsdatabase PRIVATE impl/TransactionChecker.cpp)
+endif()
+
 target_include_directories(lmsdatabase INTERFACE
 	include
 	)