Keep showing log message
If you have the Click Heatmap module enabled, either disable the module or add clickheat to the libraries folder.  

Though, looking at the path that is output in the error, it seems that clickheat is probably being included in a template file somewhere, find the code and remove it. Do a search through your files to try to find 'click.php'.  

Just disabling database logging will remove it, but will also not log anything else, so this is probably not your best option. Better to fix the problem rather than just hide it.