test: remove AIX guard in fs-options-immutable

The fs watch test was not run on AIX till now because of the known issue, #5085. Now that it is completed, this guard can be removed.

Author: thefourtheye

test/parallel/test-fs-options-immutable.js

@@ -58,21 +58,17 @@ if (common.canCreateSymLink()) {
  );
 }
 
-if (!common.isAix) {
- // TODO(thefourtheye) Remove this guard once
- // https://github.com/nodejs/node/issues/5085 is fixed
- {
- let watch;
- assert.doesNotThrow(() => {
- watch = fs.watch(__filename, options, common.noop);
- });
- watch.close();
- }
+{
+ let watch;
+ assert.doesNotThrow(() => {
+ watch = fs.watch(__filename, options, common.noop);
+ });
+ watch.close();
+}
 
- {
- assert.doesNotThrow(() => fs.watchFile(__filename, options, common.noop));
- fs.unwatchFile(__filename);
- }
+{
+ assert.doesNotThrow(() => fs.watchFile(__filename, options, common.noop));
+ fs.unwatchFile(__filename);
 }
 
 {