ART: Remove Baseline compiler

We don't need Baseline any more and it hasn't been maintained for
a while anyway. Let's remove it.

Change-Id: I442ed26855527be2df3c79935403a25b1ee55df6
diff --git a/compiler/optimizing/code_generator_mips64.h b/compiler/optimizing/code_generator_mips64.h
index 7182e8e..140ff95 100644
--- a/compiler/optimizing/code_generator_mips64.h
+++ b/compiler/optimizing/code_generator_mips64.h
@@ -289,10 +289,7 @@
 
   // Register allocation.
 
-  void SetupBlockedRegisters(bool is_baseline) const OVERRIDE;
-  // AllocateFreeRegister() is only used when allocating registers locally
-  // during CompileBaseline().
-  Location AllocateFreeRegister(Primitive::Type type) const OVERRIDE;
+  void SetupBlockedRegisters() const OVERRIDE;
 
   Location GetStackLocation(HLoadLocal* load) const OVERRIDE;