Navigate to Server Settings >> Delete Enterprise Objects.
For the question What do you want to delete from Project Server?, leave the default selection of "projects"
<label>Delete the selected project(s), select </label><label for="ctl00_ctl00_PlaceHolderMain_PWA_PlaceHolderMain_rbWorkingAndPublished">Delete projects from Draft and Published databases.</label>
<label for="ctl00_ctl00_PlaceHolderMain_PWA_PlaceHolderMain_rbWorkingAndPublished">And in the list of projects, sort by "Type", and look for "Template".</label>
<label for="ctl00_ctl00_PlaceHolderMain_PWA_PlaceHolderMain_rbWorkingAndPublished">Select the ones you want to delete and click delete.</label>
Prasanna Adavi,PMP,MCTS,MCITP,MCT http://thinkepm.blogspot.com