Revert "ART: Revert change to LiveRange::Dump"

This reverts commit 294a0509cf811061b8009ade61e76a1f94e248b2.

Need to investigate a compilation error.

Change-Id: I62020f6e546c9faf5f4a2ed6cc1f7e1499c2fa30
diff --git a/compiler/optimizing/ssa_liveness_analysis.h b/compiler/optimizing/ssa_liveness_analysis.h
index 4b19c5b..ce4bbd4 100644
--- a/compiler/optimizing/ssa_liveness_analysis.h
+++ b/compiler/optimizing/ssa_liveness_analysis.h
@@ -76,7 +76,7 @@
   }
 
   void Dump(std::ostream& stream) const {
-    stream << "[" << start_ << "," << end_ << ")";
+    stream << start_ << "-" << end_;
   }
 
   LiveRange* Dup(ArenaAllocator* allocator) const {