how can i hide project types from being created in JIRA

[Rick Doig]

Hi, I am using JIRA v6.3.13 . I want to hide the project types in the select project type screen from all users. I want users to only be able to create the software development project type and not be presented the different project types that can be created. Is there any way I can modify the Select Project Type to only allow the one project type, or is there any way that I can just default to create the software development project type and not present the user with the Select Project Type screen?  

[Nic Brough -Adaptavist-]

The project templates are all written as modules in plugins - that means you can actually disable them by turning off the modules that provide them in the Manage Addons -> System page

The bad news is that the modules are scattered - not all in one plugin (from memory, two in JIRA off-the-shelf, then Agile adds a couple, and I think there are quite a few more).  And I can't remember what the plugins are called!  Beware - I don't know what happens if you turn the whole plugin off - I'd stick to just disabling the modules you don't want.