[MachineLICM] Remove unused declaration HoistRegion

The function definition was removed on Dec 22, 2011 in commit
in 1eed5b51e87758affdbc10627b4a0884ab86606f.

diff --git a/llvm/lib/CodeGen/MachineLICM.cpp b/llvm/lib/CodeGen/MachineLICM.cpp
index 19e3666..be18581 100644 (file)
--- a/llvm/lib/CodeGen/MachineLICM.cpp
+++ b/llvm/lib/CodeGen/MachineLICM.cpp
@@ -246,8 +246,6 @@ namespace {
 
     void HoistOutOfLoop(MachineDomTreeNode *HeaderN);
 
-    void HoistRegion(MachineDomTreeNode *N, bool IsHeader);
-
     void SinkIntoLoop();
 
     void InitRegPressure(MachineBasicBlock *BB);