Remove support for RTEMS_SCHEDSIM?

[Sebastian Huber]

On 14/02/2020 15:42, Joel Sherrill wrote:

> I guess it is time to kill it.

I already have a smoking gun in my hands. I think it would be possible 
to make it working again with some effort. However, it is quite easy to 
add scheduler test scenarios in the RTEMS test suite itself, for example:

https://git.rtems.org/rtems/tree/testsuites/smptests/smpschededf02/init.c#n108