[turbofan] Improve NumberAbs lowering for Signed32 input.

src/type-cache.h

Index: src/type-cache.h
diff --git a/src/type-cache.h b/src/type-cache.h
index 1a4fa2f0850cdde76d4bad6e99e01dea90d92bf3..25acd647138d98d3a07e00aa3b087bbaf9773467 100644
--- a/src/type-cache.h
+++ b/src/type-cache.h
@@ -73,7 +73,6 @@ class TypeCache final {
   Type* const kSafeIntegerOrMinusZero =
       Type::Union(kSafeInteger, Type::MinusZero(), zone());
   Type* const kPositiveSafeInteger = CreateRange(0.0, kMaxSafeInteger);
-  Type* const kSafeSigned32 = CreateRange(-kMaxInt, kMaxInt);
 
   Type* const kUntaggedUndefined =
       Type::Intersect(Type::Undefined(), Type::Untagged(), zone());