perf kwork top: Simplify bool conversion

./tools/perf/util/bpf_kwork_top.c:120:53-58: WARNING: conversion to bool not needed here
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230915063832.120274-1-yang.lee@linux.alibaba.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

tools/perf/util/bpf_kwork_top.c

@@ -117,7 +117,7 @@ kwork_class_bpf_supported_list[KWORK_CLASS_MAX] = {
 
 static bool valid_kwork_class_type(enum kwork_class_type type)
 {
-	return type >= 0 && type < KWORK_CLASS_MAX ? true : false;
+	return type >= 0 && type < KWORK_CLASS_MAX;
 }
 
 static int setup_filters(struct perf_kwork *kwork)