Revert "Fast ART x86 interpreter"

This reverts commit 99229c71efda9363faa571017c52a215c6e28f83.

Assembly syntax issue with the Mac build.

Change-Id: I271d18d31963fae46e4077ddd39313bec0b3a39e
diff --git a/runtime/interpreter/interpreter.cc b/runtime/interpreter/interpreter.cc
index ec63fdf..6b5218d 100644
--- a/runtime/interpreter/interpreter.cc
+++ b/runtime/interpreter/interpreter.cc
@@ -239,7 +239,7 @@
 }
 
 #if !defined(__clang__)
-#if (defined(__arm__) || defined(__i386__))
+#if defined(__arm__)
 // TODO: remove when all targets implemented.
 static constexpr InterpreterImplKind kInterpreterImplKind = kMterpImplKind;
 #else
@@ -247,7 +247,7 @@
 #endif
 #else
 // Clang 3.4 fails to build the goto interpreter implementation.
-#if (defined(__arm__) || defined(__i386__))
+#if defined(__arm__)
 static constexpr InterpreterImplKind kInterpreterImplKind = kMterpImplKind;
 #else
 static constexpr InterpreterImplKind kInterpreterImplKind = kSwitchImplKind;