Remove from docs no longer valid mention about squashing single commit

doc/user/project/merge_requests/squash_and_merge.md

@@ -30,9 +30,6 @@ The squashed commit in this example is followed by a merge commit, because the m
 
 The squashed commit's default commit message is taken from the merge request title.
 
-NOTE:
-This only takes effect if there are at least 2 commits. As there is nothing to squash, the commit message does not change if there is only 1 commit.
-
 It can be customized before merging a merge request.
 
 ![A squash commit message editor](img/squash_mr_message.png)