style(launcher): fix double semicolon

Author: juliemr

Diff for: lib/launcher.js

@@ -25,7 +25,7 @@ var reportHeader_ = function(childFork) {
   var capability = childFork.capability;
   var eol = require('os').EOL;
 
-  var outputHeader = eol + '------------------------------------' + eol;;
+  var outputHeader = eol + '------------------------------------' + eol;
   outputHeader += 'PID: ' + childFork.process.pid + ' (capability: ';
   outputHeader += (capability.browserName) ?
       capability.browserName : '';