remove escape logic for passwords

if linuxserver/docker-bookstack#140 works, we should replicate.
do not merge until we consider the above PR to be sufficiently tested (but before end of month so i can get a tshirt ;)

Author: drizuid

root/etc/cont-init.d/40-initialise-db

@@ -44,7 +44,6 @@ if [ -z "${MYSQL_ROOT_PASSWORD}" ]; then
 else
     TEST_LEN=${#MYSQL_ROOT_PASSWORD}
 fi
-MYSQL_ROOT_PASSWORD=$(sed -E 's/('\'')/\\\1/g' <<< "${MYSQL_ROOT_PASSWORD}")
 if [ "${TEST_LEN}" -lt "4" ]; then
     MYSQL_PASS="CREATE USER 'root'@'%' IDENTIFIED BY '' ;"
 else
@@ -57,7 +56,6 @@ if [ "${MYSQL_USER+x}" ] && \
 [ "${MYSQL_DATABASE+x}" ] && \
 [ "${MYSQL_PASSWORD+x}" ] && \
 [ "${#MYSQL_PASSWORD}" -gt "3" ]; then
-MYSQL_PASSWORD=$(sed -E 's/('\'')/\\\1/g' <<< "${MYSQL_PASSWORD}")
 read -r -d '' MYSQL_DB_SETUP << EOM
 CREATE DATABASE \`${MYSQL_DATABASE}\`;
 CREATE USER '${MYSQL_USER}'@'%' IDENTIFIED BY '${MYSQL_PASSWORD}';