Remove all trivial macros from Rust

[dev-ardi]

From all of the macro snippets that exist in Rust, I think that most of them aren't very useful.

It looks like it was decided at some point that macros were hard to type...? Some of them are never used outside of macros. I'd delete all of the trivial ones and all macro attributes that don't take arguments. I'm fine with derive, feature, etc.