emacs: Remove excess empty lines

emacs: Remove excess empty lines

Most people who write lots of lisp tend to only sparsely use empty
"separator" lines within forms.  In lisp they feel unnecessary and
since most files stick to this convention we get a bit confused
when there are extra empty lines.  It feels like the s-expressions
are falling into pieces.

All of this is especially true between a function's doc-string and
body because the doc-string is colored differently, which visually
already separates it quite sufficiently from the code that follows.