Update authors

Author: Ulf Lilleengen

embedded-nal-async/Cargo.toml

@@ -2,10 +2,6 @@
 name = "embedded-nal-async"
 version = "0.1.0" # remember to update html_root_url
 authors = [
-    "Jonathan 'theJPster' Pallant <github@thejpster.org.uk>",
-    "Mathias Koch <mk@blackbird.online>",
-    "Diego Barrios Romero <eldruin@gmail.com>",
-    "Ryan Summers <ryan.summers@vertigo-designs.com>",
     "Ulf Lilleengen <lulf@redhat.com>",
 ]
 edition = "2018"