Merge #19073: Remove outdated comment about DER encoding

4c82579 Remove outdated comment about DER encoding (Elichai Turkel)

Pull request description:

  This comment got me confused about the status of BIP66 (Thanks jnewbery for explaining)
  The comment was added in: bitcoin/bitcoin#3843
  But in bitcoin/bitcoin#5713 strict DER encoding was enforced in consensus,
  and is now it's buried and enforced by the height of the block here: https://github.com/bitcoin/bitcoin/blob/4af01b37d40246cd1fdb54719855927e36a36b46/src/validation.cpp#L1889

  P.S. This is also quite confusing: https://github.com/bitcoin/bitcoin/blob/4af01b37d40246cd1fdb54719855927e36a36b46/src/validation.cpp#L1560-L1563 But seems to be intentional: https://github.com/bitcoin/bitcoin/blob/4af01b37d40246cd1fdb54719855927e36a36b46/src/validation.cpp#L1510-L1511

ACKs for top commit:
  laanwj:
    ACK 4c82579

Tree-SHA512: 7afbbae84ed4ecfaa0a273ae024b14f2b7ffe65307f078086fe0b5b645c57722bc2952fb15d167d9e4fa5b052d1d0ac6e5e33f57e8fc881c0ea611d352bccc1e

Author: fanquake

src/script/standard.h

@@ -44,8 +44,7 @@ extern unsigned nMaxDatacarrierBytes;
 /**
  * Mandatory script verification flags that all new blocks must comply with for
  * them to be valid. (but old blocks may not comply with) Currently just P2SH,
- * but in the future other flags may be added, such as a soft-fork to enforce
- * strict DER encoding.
+ * but in the future other flags may be added.
  *
  * Failing one of these tests may trigger a DoS ban - see CheckInputScripts() for
  * details.