sched/core_ctl: Drop core rotate code

As we do not need to support core rotate feature on SDM855,
drop the code that got in.

Change-Id: Ie1c40c8c551ad425c59a78cc83be013dee0b3c67
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>