biology/ncbi-vdb: remove maintainer (email address gone)

The maintainer's email address seems to no longer exist:

... while talking to niid-go-jp.mail.protection.outlook.com.:

DATA

<<< 550 5.4.1 Recipient address rejected: Access denied. [TYO1EPF00005026.JPNP286.PROD.OUTLOOK.COM
+2024-10-25T15:24:34.102Z 08DCF0869103074C]
550 5.1.1 <mzaki@niid.go.jp>... User unknown
<<< 503 5.5.2 Need rcpt command [TYO1EPF00005026.JPNP286.PROD.OUTLOOK.COM 2024-10-25T15:24:34.102Z 08DCF0869103074C]