Remove Andrew Bartlett work address

[abartlet]

I'm getting too much mail from oss-fuzz.

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[abartlet]

I'm not going to sign a CLA to remove my e-mail address.

[github-actions[bot]]

abartlet (verified) is either the primary contact or is in the CCs list of projects/samba.

[jonathanmetzman]

Superseded by https://github.com/google/oss-fuzz/pull/12679