Fix 'drop database' command

The 'drop database' command in restore.sh was using user
${DB_ROOTUSER} and has been changed to use ${DB_USER}.

Author: dalenewby

application/restore.sh

@@ -25,7 +25,7 @@ if [ -z "${result}" ]; then
     echo "${MYNAME}: INFO: ${message}"
 else
     echo "${MYNAME}: deleting database ${DB_NAME}"
-    result=$(psql --host=${DB_HOST} --dbname=postgres --username=${DB_ROOTUSER} --command="DROP DATABASE ${DB_NAME};")
+    result=$(psql --host=${DB_HOST} --dbname=postgres --username=${DB_USER} --command="DROP DATABASE ${DB_NAME};")
     if [ "${result}" != "DROP DATABASE" ]; then
         message="Drop database command failed: ${result}"
         echo "${MYNAME}: FATAL: ${message}"