message: Remove string length workaround
  Summary: Should no longer be needed after the previous diff, as the ResStringPool code has been updated to properly return lengths.
diff: @@ -65,21 +65,6 @@ std::string get_string_from_pool(const android::ResStringPool& pool,
  return std::string(string8.string());
  }
  -// The import of AOSP code that Redex has right now predates
  -// https://cs.android.com/android/_/android/platform/frameworks/base/+/d0f116b619feede0cfdb647157ce5ab4d50a1c46
  -// which properly returns UTF-8 lengths when reading UTF-8 string data. We have
  -// the bugged version which returns UTF-16 lengths for the UTF-8 data! Find the
  -// correct length by walking back from the pointer (being mindful that it might
  -// take two bytes to encode the length for long lengths).
  -size_t read_utf8_length_from_string_pool_data(const char* s) {
  - uint8_t maybe = *((uint8_t*)s - 2);
  - uint8_t len = *((uint8_t*)s - 1);
  - if ((maybe & 0x80) != 0) {
  - return ((maybe & 0x7F) << 8) | len;
  - }
  - return len;
  -}
  -
  bool TableParser::visit_global_strings(android::ResStringPool_header* pool) {
  m_global_pool_header = pool;
  arsc::StringPoolRefVisitor::visit_global_strings(pool);
  @@ -1062,8 +1047,7 @@ void add_existing_string_to_builder(const android::ResStringPool& string_pool,
  size_t length;
  if (string_pool.isUTF8()) {
  auto s = string_pool.string8At(idx, &length);
  - size_t actual_length = apk::read_utf8_length_from_string_pool_data(s);
  - builder->add_string(s, actual_length);
  + builder->add_string(s, length);
  } else {
  auto s = string_pool.stringAt(idx, &length);
  builder->add_string(s, length);
  @@ -1492,8 +1476,7 @@ void rebuild_string_pool(
  size_t length;
  if (is_utf8) {
  auto s = string_pool.string8At(idx, &length);
  - size_t actual_length = apk::read_utf8_length_from_string_pool_data(s);
  - add_string_idx_to_builder<char>(string_pool, idx, s, actual_length,
  + add_string_idx_to_builder<char>(string_pool, idx, s, length,
  span_remapper, builder);
  } else {
  auto s = string_pool.stringAt(idx, &length);
  