Get rid of version field in bower.json again

Closes #3322

bin/release

@@ -24,7 +24,6 @@ function rewriteJSON(pack) {
   return pack.replace(/"version":"\d+\.\d+\.\d+"/, "\"version\":\"" + number + "\"");
 }
 rewrite("package.json", rewriteJSON);
-rewrite("bower.json", rewriteJSON);
 rewrite("doc/manual.html", function(manual) {
   return manual.replace(/>version \d+\.\d+\.\d+<\/span>/, ">version " + number + "</span>");
 });

bower.json

 {
   "name": "codemirror",
-  "version":"5.3.1",
   "main": ["lib/codemirror.js", "lib/codemirror.css"],
   "ignore": [
     "**/.*",