Revert of [regexp] Port test, match, and search

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 6ea36440b69055a2f603e9e67154889a6467f65e..926bba5efad288cd71ecc18f9e4e254ca285c5c9 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -7030,18 +7030,6 @@
   FixedArray::cast(data())->set(index, value);
 }
 
-void JSRegExp::SetLastIndex(int index) {
-  static const int offset =
-      kSize + JSRegExp::kLastIndexFieldIndex * kPointerSize;
-  Smi* value = Smi::FromInt(index);
-  WRITE_FIELD(this, offset, value);
-}
-
-Object* JSRegExp::LastIndex() {
-  static const int offset =
-      kSize + JSRegExp::kLastIndexFieldIndex * kPointerSize;
-  return READ_FIELD(this, offset);
-}
 
 ElementsKind JSObject::GetElementsKind() {
   ElementsKind kind = map()->elements_kind();