developers handbook: Remove obsolete information about binary objects

[emaste]

Summary

It is no longer necessary to uuencode binary blobs for drivers. We can now commit the binary object to the tree as-is.

[imp]

One suggested tweak you can take or leave. I'm fine with this or with my suggestion or with anything similar.

documentation/content/en/books/developers-handbook/policies/_index.adoc

274

I'd add something like "Until converted to native format, " at the front of this rather than removing it entirely.

[emaste]

documentation/content/en/books/developers-handbook/policies/_index.adoc

274

Yeah, maybe something like "Historically, object files were uuencoded and named ..."

[emaste]

Take @imp's suggestion, mention historical uuencoding.

[pauamma_gundo.com]

documentation/content/en/books/developers-handbook/policies/_index.adoc

274–275

Consensus is for a single sentence per line.

[emaste]

One sentence per line (indented for readability as list item)