[RFC] Remove profile tools from default config

I suspect this will break existing MEL configs that rely on profiling to be enabled by default but I wonder if there may be a better way to enable these options for configs that need it.  I'm trying to build MEL Lite which does _not_ officially support profiling but there is no easy way for me to override this file.

It looks like the env variable TEMPLATECONF may have been intended for that but there's no way to enforce that the user enter it.  And the current logic in setup-melbuilddir clears that variable before processing anyway.