Revert "ANDROID: sched: Make uclamp changes depend on CAP_SYS_NICE"

This reverts commit 0bb784e6.  It causes
merge conflicts in 6.0-rc1 and so needs to be reverted.  If it is still
needed, it can come back after 6.0-rc1.

Bug: 187186685
Cc: Quentin Perret <qperret@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I02bba37a97e0d5f8f4e38c4b880d620ef788f334