Remove polyfill code for old node JS versions

Author: rjmunro

lib/fs-helpers.js

@@ -42,18 +42,14 @@ var helpers = {
      *
      * @param {String} path
      */
-    exists: typeof fs.access === 'function' ?
-        function (path) {
-            try {
-                fs.accessSync(path);
-                return true;
-            } catch (err) {
-                return false;
-            }
-        } :
-        function (path) {
-            return fs.existsSync(path);
-        },
+    exists: function (path) {
+        try {
+            fs.accessSync(path);
+            return true;
+        } catch (err) {
+            return false;
+        }
+    },
 
     /**
      * @param {String} path

lib/git-hooks.js

@@ -62,13 +62,7 @@ module.exports = {
         fsHelpers.makeDir(hooksPath);
         HOOKS.forEach(function (hookName) {
             var hookPath = path.resolve(hooksPath, hookName);
-            try {
-                fs.writeFileSync(hookPath, hook, {mode: '0777'});
-            } catch (e) {
-                // node 0.8 fallback
-                fs.writeFileSync(hookPath, hook, 'utf8');
-                fs.chmodSync(hookPath, '0777');
-            }
+            fs.writeFileSync(hookPath, hook, {mode: '0777'});
         });
     },