Revert "Optimizing: Fix long-to-fp conversion on x86."

Test fails on arm.

This reverts commit 2d45b4df3838d9c0e5a213305ccd1d7009e01437.

Change-Id: Id2864917b52f7ffba459680303a2d15b34f16a4e
diff --git a/compiler/optimizing/code_generator_x86.h b/compiler/optimizing/code_generator_x86.h
index 1cb9e32..0cc3c65 100644
--- a/compiler/optimizing/code_generator_x86.h
+++ b/compiler/optimizing/code_generator_x86.h
@@ -171,10 +171,8 @@
   void GenerateMemoryBarrier(MemBarrierKind kind);
   void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
   void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
-  // Push value to FPU stack. `is_fp` specifies whether the value is floating point or not.
-  // `is_wide` specifies whether it is long/double or not.
   void PushOntoFPStack(Location source, uint32_t temp_offset,
-                       uint32_t stack_adjustment, bool is_fp, bool is_wide);
+                       uint32_t stack_adjustment, bool is_float);
 
   void GenerateImplicitNullCheck(HNullCheck* instruction);
   void GenerateExplicitNullCheck(HNullCheck* instruction);