[Turbofan] Revert FP register aliasing support on Arm.

src/compiler/register-allocator.h

Index: src/compiler/register-allocator.h
diff --git a/src/compiler/register-allocator.h b/src/compiler/register-allocator.h
index f3ec5dfd8698a9a72bf2bb3611e7fb98c091b6d3..6bfc6c410a9c0eeeddd63f6acd4f5445a87bd566 100644
--- a/src/compiler/register-allocator.h
+++ b/src/compiler/register-allocator.h
@@ -766,24 +766,12 @@ class RegisterAllocationData final : public ZoneObject {
   ZoneVector<TopLevelLiveRange*>& fixed_live_ranges() {
     return fixed_live_ranges_;
   }
-  ZoneVector<TopLevelLiveRange*>& fixed_float_live_ranges() {
-    return fixed_float_live_ranges_;
-  }
-  const ZoneVector<TopLevelLiveRange*>& fixed_float_live_ranges() const {
-    return fixed_float_live_ranges_;
-  }
   ZoneVector<TopLevelLiveRange*>& fixed_double_live_ranges() {
     return fixed_double_live_ranges_;
   }
   const ZoneVector<TopLevelLiveRange*>& fixed_double_live_ranges() const {
     return fixed_double_live_ranges_;
   }
-  ZoneVector<TopLevelLiveRange*>& fixed_simd128_live_ranges() {
-    return fixed_simd128_live_ranges_;
-  }
-  const ZoneVector<TopLevelLiveRange*>& fixed_simd128_live_ranges() const {
-    return fixed_simd128_live_ranges_;
-  }
   ZoneVector<BitVector*>& live_in_sets() { return live_in_sets_; }
   ZoneVector<BitVector*>& live_out_sets() { return live_out_sets_; }
   ZoneVector<SpillRange*>& spill_ranges() { return spill_ranges_; }
@@ -845,9 +833,7 @@ class RegisterAllocationData final : public ZoneObject {
   ZoneVector<BitVector*> live_out_sets_;
   ZoneVector<TopLevelLiveRange*> live_ranges_;
   ZoneVector<TopLevelLiveRange*> fixed_live_ranges_;
-  ZoneVector<TopLevelLiveRange*> fixed_float_live_ranges_;
   ZoneVector<TopLevelLiveRange*> fixed_double_live_ranges_;
-  ZoneVector<TopLevelLiveRange*> fixed_simd128_live_ranges_;
   ZoneVector<SpillRange*> spill_ranges_;
   DelayedReferences delayed_references_;
   BitVector* assigned_registers_;