When AutoCAD Plots it craetes a log file. These can be usefull but in soem cases such as a Hard Drive with low disk space it can be good to turn this off. Here is how we can do this.
1.) Launch options (right in the command line and select options)
2.) Go to the Plot and Publish tab
3.) In the lower left you will see Plot and Publish Log under this uncheck Automatically Save Plot and Publish Log
4.) Select OK
Now the Plot and OPublish log is disabled