MAINTAINERS: update - kernel/git/netdev/net.git - Netdev Group's networking tree

I am making this change again since I received the following instruction. "As an IBM employee, you are not allowed to use your gmail account to work in any way on VNIC. You are not allowed to use your personal email account as a "hobby". You are an IBM employee 100% of the time. Please remove yourself completely from the maintainers file. I grant you a 1 time exception on contributions to VNIC to

[causeless]

"@EzoeRyou 会社から以下の指示を受けたためにこの変更をする。 「おまえはIBM社員としてVNICにおまえのgmailアカウントを使うことはいかなる場合にもまかりならん。おまえは100%の…" from https://twitter.com/i/web/status/1384455785032216579