drivers perf: remove unused field pmu_node

The driver does not use the pmu_node field, so remove it.

Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240919034601.2453-1-cuiyunhui@bytedance.com
Signed-off-by: Will Deacon <will@kernel.org>

Author: cuiyunhui

drivers/perf/dwc_pcie_pmu.c

@@ -82,7 +82,6 @@ struct dwc_pcie_pmu {
 	u16			ras_des_offset;
 	u32			nr_lanes;
 
-	struct list_head	pmu_node;
 	struct hlist_node	cpuhp_node;
 	struct perf_event	*event[DWC_PCIE_EVENT_TYPE_MAX];
 	int			on_cpu;