sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()

The _status() postfix has no real meaning, simplify the naming
and harmonize it with set_rd_overloaded().

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Qais Yousef <qyousef@layalina.io>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/ZgVHq65XKsOZpfgK@gmail.com