Remove function source code previews.

[StevenDufresne]

Functions sources are typically complex and hard to read. We should keep the link to it, but remove the code previews.

[dd32]

Personally I really like the source preview.

It allows me to scan most functions quickly to determine execution flow better than reading the english, which can often be.. look, code is much more explicit than human language.

The click-to-copy functionality should be disabled though. edit: This seems to be working MUCH better than in the past, where clicking anywhere on the code would instantly copy everything, so I guess this has been fixed already

There are definitely cases where it makes zero sense to show the code though, but I think they're in the minority.

[tellyworth]

Yeah I find it useful for similar reasons. It could definitely be improved though.