Revert r103880 (thread-safe static initialization w/ exceptions),
because it's causing strange linker errors. Unfixes PR7144.

llvm-svn: 103890
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 9761fa0..151c13c 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -1258,8 +1258,7 @@
                                     bool IsInitializer = false);
 
   void EmitCXXThrowExpr(const CXXThrowExpr *E);
-  void EmitRethrow();
-  
+
   //===--------------------------------------------------------------------===//
   //                             Internal Helpers
   //===--------------------------------------------------------------------===//