remove value judgement from std lib API docs
remove value judgement from std lib API docs

documentation should be purely technical, and not contain opinions about
how easy or hard something is.

zig-lang/zig,andrewrk/zig,raulgrell/zig,raulgrell/zig,raulgrell/zig,zig-lang/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,Dimenus/zig,Dimenus/zig,Dimenus/zig,raulgrell/zig