filemerge: remove leftover documentation of removed argument
I removed the `premerge` argument in
https://phab.mercurial-scm.org/D11859.
Differential Revision: https://phab.mercurial-scm.org/D11925
--- a/mercurial/filemerge.py Mon Dec 13 14:44:16 2021 -0500
+++ b/mercurial/filemerge.py Tue Dec 14 13:41:34 2021 -0800
@@ -1028,7 +1028,6 @@
def filemerge(repo, wctx, mynode, orig, fcd, fco, fca, labels=None):
"""perform a 3-way merge in the working directory
- premerge = whether this is a premerge
mynode = parent node before merge
orig = original local filename before merge
fco = other file context