[IR] Trivial cleanups in Use. NFC.

Remove Use::setPrev. It provided no value because it had the same
accessibility as the underlying field Prev, and there was no
corresponding setNext anyway.

Simplify Use::removeFromList.

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
index cf54740..6655270 100644
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -831,12 +831,12 @@ void Value::reverseUseList() {
   while (Current) {
     Use *Next = Current->Next;
     Current->Next = Head;
-    Head->setPrev(&Current->Next);
+    Head->Prev = &Current->Next;
     Head = Current;
     Current = Next;
   }
   UseList = Head;
-  Head->setPrev(&UseList);
+  Head->Prev = &UseList;
 }
 
 bool Value::isSwiftError() const {