Revert "[optimizing compiler] Add CMP{L,G}_{FLOAT,DOUBLE}"

Fails on arm due to missing vmrs op after vcmp. I revert this instead of pushing the fix because I don't understand yet why it compiles with run-test but not with dex2oat.

This reverts commit fd861249f31ab360c12dd1ffb131d50f02b0bfc6.

Change-Id: Idc2d30f6a0f39ddd3596aa18a532ae90f8aaf62f
diff --git a/compiler/utils/x86/constants_x86.h b/compiler/utils/x86/constants_x86.h
index 2dfb65c..45c3834 100644
--- a/compiler/utils/x86/constants_x86.h
+++ b/compiler/utils/x86/constants_x86.h
@@ -96,8 +96,7 @@
   kZero         = kEqual,
   kNotZero      = kNotEqual,
   kNegative     = kSign,
-  kPositive     = kNotSign,
-  kUnordered    = kParityEven
+  kPositive     = kNotSign
 };