tests/narrow-library.sh

simplemerge: delete unused find_unconflicted()

The function has been unused ever since it was introduced in
465b9ea02868 (Import 3-way merge code from bzr, 2007-04-16).

Differential Revision: https://phab.mercurial-scm.org/D9832

cat >> $HGRCPATH <<EOF
[extensions]
narrow=
[ui]
ssh=$PYTHON "$RUNTESTDIR/dummyssh"
[experimental]
changegroup3 = True
EOF