get_author_ident_from_commit(): remove useless quoting

The command 's/'\''/'\''\'\'\''/g' only triples single quotes: $ echo "What's up?" | sed 's/'\''/'\''\'\'\''/g' What'''s up? This doesn't hurt as compared to a single single quote it only adds an empty string, but it makes the script needlessly complicated and hard to understand. The useful quoting is done by s/'\''/'\''\\'\'\''/g at the beginning of the script and only once for all three variables. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>