[doc] remove non-signaling mentions of BIP125

Our RBF policy is different from the rules specified in BIP125. For
example, the BIP does not mention Rule 6, and our Rule 4 uses the
(configurable) incremental relay feerate (distinct from the
minimum relay feerate). Those interested in our policy should refer to
doc/policy/mempool-replacements.md instead. These rules may also
continue to diverge with package RBF and other RBF improvements. Keep
references to the BIP125 signaling wrt sequence numbers, since that is
still correct and widely used. It is helpful to refer to this as "BIP125
signaling" since it is unambiguous and succint, especially if we have
multiple ways to signal replaceability in the future.

The rule numbers in doc/policy/mempool-replacements.md correspond
largely to those of BIP 125, so we can still refer to them like "Rule 5."

1 files changed, 1 insertions, 1 deletions

diff --git a/src/policy/policy.h b/src/policy/policy.h
index 3d2660b081..29764ea2d9 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -31,7 +31,7 @@ static constexpr unsigned int MIN_STANDARD_TX_NONWITNESS_SIZE{82};
 static constexpr unsigned int MAX_P2SH_SIGOPS{15};
 /** The maximum number of sigops we're willing to relay/mine in a single tx */
 static constexpr unsigned int MAX_STANDARD_TX_SIGOPS_COST{MAX_BLOCK_SIGOPS_COST/5};
-/** Default for -incrementalrelayfee, which sets the minimum feerate increase for mempool limiting or BIP 125 replacement **/
+/** Default for -incrementalrelayfee, which sets the minimum feerate increase for mempool limiting or replacement **/
 static constexpr unsigned int DEFAULT_INCREMENTAL_RELAY_FEE{1000};
 /** Default for -bytespersigop */
 static constexpr unsigned int DEFAULT_BYTES_PER_SIGOP{20};