message: remove fix_dex_pos_pointers for split step in dedupblock
  Summary: Since in dedup step it also called fix_dex_pos_pointers, it seems not necessary to run fix_dex_pos_pointers in split step. (Because dedup may or may not happen after split, and split itself shouldn't cause dex position deletion)
diff: @@ -576,10 +576,6 @@ class DedupBlocksImpl {
  // is located and dedup the common block created from split.
  void split_postfix_blocks(const PostfixSplitGroupMap& dups,
  cfg::ControlFlowGraph& cfg) {
  - fix_dex_pos_pointers(dups.begin(), dups.end(),
  - [](auto it) { return it->second.postfix_blocks; },
  - cfg);
  -
  for (const PostfixSplitGroupMap::value_type* entry : get_id_order(dups)) {
  const auto& group = entry->second;
  TRACE(DEDUP_BLOCKS, 4,
  