Let's remove the "BrowserID" module

[Ryan Kelly]

The "Other/BrowserID" module is obsolete and should be removed:

https://wiki.mozilla.org/Modules/Other#BrowserID

The code and services that it covers have mostly been decommissioned, and
the few remaining pieces of BrowserID-derived technology that we still use
are squarely owned by the "Firefox Accounts" module. The listed owner and
peers are no longer active in the Mozilla community AFAICT, and certainly
not on BrowserID-related code.

Can I please have approval from the Module System Owners to remove it,
officially subsuming any remaining technical pieces into the Firefox
Accounts module?


Thanks,

Ryan