svm: Delete unused function sysrq_sched_debug_show_export

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4UR5Y
CVE: NA

--------------------

Delete unused function sysrq_sched_debug_show_export
Signed-off-by: NLijun Fang <fanglijun3@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>

drivers/char/svm.c

@@ -163,8 +163,6 @@ static char *svm_cmd_to_string(unsigned int cmd)
 	return NULL;
 }
 
-extern void sysrq_sched_debug_tidy(void);
-
 /*
  * image word of slot
  * SVM_IMAGE_WORD_INIT: initial value, indicating that the slot is not used.
@@ -423,17 +421,6 @@ static int svm_va2pa_trunk_init(struct device *dev)
 	return 0;
 }
 
-void sysrq_sched_debug_show_export(void)
-{
-#ifdef CONFIG_SCHED_DEBUG
-	sysrq_sched_debug_tidy();
-#else
-	pr_err("Not open CONFIG_SCHED_DEBUG\n");
-#endif
-	panic("pcie heart miss\n");
-}
-EXPORT_SYMBOL(sysrq_sched_debug_show_export);
-
 static struct svm_process *find_svm_process(unsigned long asid)
 {
 	struct rb_node *node = svm_process_root.rb_node;