Simplify pass through of CHECK_SYNTACTIC_ERRORS

Author: johnnyreilly

lib/service.js

@@ -9,7 +9,7 @@ var checker = new IncrementalChecker(
   process.env.WATCH === '' ? [] : process.env.WATCH.split('|'),
   parseInt(process.env.WORK_NUMBER, 10),
   parseInt(process.env.WORK_DIVISION, 10),
-  process.env.CHECK_SYNTACTIC_ERRORS === '' ? false : process.env.CHECK_SYNTACTIC_ERRORS
+  process.env.CHECK_SYNTACTIC_ERRORS
 );
 
 function run (cancellationToken) {