Re: How do I delete a Launcher Icon and related Files
You said that you created the icons, but not how or where, which should give you a clue where to remove them from.
You might be confusing icons with launchers. Icons you see in Dash, other than recently accessed or downloaded files, are typically desktop launchers that have an icon associated with them. The launchers are in /usr/share/applications owned by root.
If you installed MainMenu (alacarte) to make the launchers, maybe you could use that to delete them. You do not really want to remove system icons if one of the standard icons was used for your launchers.
i5 650 3.2 GHz, 8 GB, nvidia GTX 750 Ti, 32" 1080p | i7-4700MQ, 8 GB, Intel HD 4600/nvidia GTX 765M, 15.6" 1080p | etc.