Revert "ARM/ARM64: Extend support of instruction combining."

The test fails its checker parts.

This reverts commit debeb98aaa8950caf1a19df490f2ac9bf563075b.

Change-Id: I49929e15950c7814da6c411ecd2b640d12de80df
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index 4da48bd..fffd005 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -62,7 +62,6 @@
 #include "induction_var_analysis.h"
 #include "inliner.h"
 #include "instruction_simplifier.h"
-#include "instruction_simplifier_arm.h"
 #include "intrinsics.h"
 #include "jit/debugger_interface.h"
 #include "jit/jit_code_cache.h"
@@ -446,11 +445,8 @@
     case kThumb2:
     case kArm: {
       arm::DexCacheArrayFixups* fixups = new (arena) arm::DexCacheArrayFixups(graph, stats);
-      arm::InstructionSimplifierArm* simplifier =
-          new (arena) arm::InstructionSimplifierArm(graph, stats);
       HOptimization* arm_optimizations[] = {
-        fixups,
-        simplifier
+        fixups
       };
       RunOptimizations(arm_optimizations, arraysize(arm_optimizations), pass_observer);
       break;