perf/x86/rapl: Remove the unused get_rapl_pmu_cpumask() function

JIRA: https://issues.redhat.com/browse/RHEL-77935

upstream
========
commit 2f2db34
Author: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Date: Fri Nov 15 06:07:57 2024 +0000

description
===========
commit 9e9af8b ("perf/x86/rapl: Clean up cpumask and hotplug")
removes the cpumask handling from rapl. Post that, we no longer need the
get_rapl_pmu_cpumask() function. So remove it.

    Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Reviewed-by: Zhang Rui <rui.zhang@intel.com>
    Tested-by: Zhang Rui <rui.zhang@intel.com>
    Link: https://lore.kernel.org/r/20241115060805.447565-2-Dhananjay.Ugwekar@amd.com

Signed-off-by: Michael Petlan <mpetlan@redhat.com>

Author: rfmvh

arch/x86/events/rapl.c

@@ -153,7 +153,7 @@ static u64 rapl_timer_ms;
 static struct perf_msr *rapl_msrs;
 
 /*
- * Helper functions to get the correct topology macros according to the
+ * Helper function to get the correct topology id according to the
  * RAPL PMU scope.
  */
 static inline unsigned int get_rapl_pmu_idx(int cpu)
@@ -162,12 +162,6 @@ static inline unsigned int get_rapl_pmu_idx(int cpu)
 					 topology_logical_die_id(cpu);
 }
 
-static inline const struct cpumask *get_rapl_pmu_cpumask(int cpu)
-{
-	return rapl_pmu_is_pkg_scope() ? topology_core_cpumask(cpu) :
-					 topology_die_cpumask(cpu);
-}
-
 static inline struct rapl_pmu *cpu_to_rapl_pmu(unsigned int cpu)
 {
 	unsigned int rapl_pmu_idx = get_rapl_pmu_idx(cpu);