Revert of [arm] Fix recognition of VNEG.

src/compiler/node-matchers.h

Index: src/compiler/node-matchers.h
diff --git a/src/compiler/node-matchers.h b/src/compiler/node-matchers.h
index 7f2fcb47811bf11ce1e0029796bcefe761dd47c2..ebb772210cd6e2ad6db6ed668b14c2010b1d3287 100644
--- a/src/compiler/node-matchers.h
+++ b/src/compiler/node-matchers.h
@@ -4,8 +4,6 @@
 
 #ifndef V8_COMPILER_NODE_MATCHERS_H_
 #define V8_COMPILER_NODE_MATCHERS_H_
-
-#include <cmath>
 
 #include "src/compiler/generic-node.h"
 #include "src/compiler/generic-node-inl.h"
@@ -106,7 +104,6 @@
 struct FloatMatcher FINAL : public ValueMatcher<T, kOpcode> {
   explicit FloatMatcher(Node* node) : ValueMatcher<T, kOpcode>(node) {}
 
-  bool IsMinusZero() const { return this->Is(0.0) && signbit(this->Value()); }
   bool IsNaN() const { return this->HasValue() && std::isnan(this->Value()); }
 };
 
@@ -169,7 +166,6 @@
 typedef BinopMatcher<UintPtrMatcher, UintPtrMatcher> UintPtrBinopMatcher;
 typedef BinopMatcher<Float64Matcher, Float64Matcher> Float64BinopMatcher;
 typedef BinopMatcher<NumberMatcher, NumberMatcher> NumberBinopMatcher;
-
 
 template <class BinopMatcher, IrOpcode::Value kAddOpcode,
           IrOpcode::Value kMulOpcode, IrOpcode::Value kShiftOpcode>