Remove the unused author field for characters

This is handled as part of the attribution data now. It was unused
for quite some time, but I kept adding 'em anyway!

.vscode/snippets.code-snippets

@@ -50,7 +50,6 @@
 		  "characterMakers[\"$1\"] = () => {",
 		  "    return makeCharacter(",
 		  "        \"$1\",",
-		  "        \"$2\",",
 		  "        {",
 		  "",
 		  "        },",

presets/species.js

@@ -3,7 +3,6 @@ const speciesMakers = {};
 speciesMakers["Synx"] = () => {
     const species = makeCharacter(
         "Synx",
-        "ChimeraSynx",
         {
             goochick: {
                 height: math.unit(0.5, "feet"),