Drop explicit "mysql_ssl_rsa_setup" invocation

> I _think_ the separate mysql_ssl_rsa_setup utility was mostly just relevant before we  started linking openssl (for licensing issues), so this may no longer be needed for any versions? Also, this behavior can be controlled with the auto_generate_certs and  sha256_password_auto_generate_rsa_keys settings. So by virtue of me being over 2 years late *cough*, I think this probably isn't needed any more :)

Author: tianon

5.7/docker-entrypoint.sh

@@ -192,13 +192,6 @@ docker_init_database_dir() {
 	mysql_note "Initializing database files"
 	"$@" --initialize-insecure --default-time-zone=SYSTEM
 	mysql_note "Database files initialized"
-
-	if command -v mysql_ssl_rsa_setup > /dev/null && [ ! -e "$DATADIR/server-key.pem" ]; then
-		# https://github.com/mysql/mysql-server/blob/23032807537d8dd8ee4ec1c4d40f0633cd4e12f9/packaging/deb-in/extra/mysql-systemd-start#L81-L84
-		mysql_note "Initializing certificates"
-		mysql_ssl_rsa_setup --datadir="$DATADIR"
-		mysql_note "Certificates initialized"
-	fi
 }
 
 # Loads various settings that are used elsewhere in the script