[PATCH v4 17/17] perf: Drop guest callback (un)register stubs

[Sean Christopherson <seanjc@xxxxxxxxxx>]

Drop perf's stubs for (un)registering guest callbacks now that KVM
registration of callbacks is hidden behind GUEST_PERF_EVENTS=y.  The only
other user is x86 XEN_PV, and x86 unconditionally selects PERF_EVENTS.

No functional change intended.

Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
 include/linux/perf_event.h | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 0ac7d867ca0c..7b7525e9155f 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1511,11 +1511,6 @@ perf_sw_event(u32 event_id, u64 nr, struct pt_regs 
*regs, u64 addr)      { }
 static inline void
 perf_bp_event(struct perf_event *event, void *data)                    { }
 
-static inline void perf_register_guest_info_callbacks
-(struct perf_guest_info_callbacks *cbs)                                        
{ }
-static inline void perf_unregister_guest_info_callbacks
-(struct perf_guest_info_callbacks *cbs)                                        
{ }
-
 static inline void perf_event_mmap(struct vm_area_struct *vma)         { }
 
 typedef int (perf_ksymbol_get_name_f)(char *name, int name_len, void *data);
-- 
2.34.0.rc0.344.g81b53c2807-goog