If you don't wish to receive notifications like this again you have two options:
Turn off all checks for new compiler installations. Do this by ticking the Don't show this again check box below.
If you change your mind later you can re-enable the checks from the Configure Compilers dialogue box.
Turn notifications on or off on a per-compiler basis. You need to do this after you have closed this dialogue box, again by using the Configure Compilers dialogue box.
For information about how to configure automatic detection of Delphi compilers see the Register Compilers with CodeSnip help topic.
Note: only Delphi compilers can be automatically registered with CodeSnip: this doesn't work with Free Pascal.