Improve the performance of `Style/ExtraSpacing` cop
Improve the performance of `Style/ExtraSpacing` cop

Solution
-------

`aligned_tok?` method is very slow.
So, it doesn't call the method if the method is unnecessary.

Benchmark
------

In RuboCop directory

```sh
before patch
$ bundle exec rake 'bench_cop[Style/ExtraSpacing, ., 4]''
Benchmarking Style/ExtraSpacing on . (using default config)
(4 iterations, 811 files)
Finished parsing source, testing inspection...
 29.650000   0.020000  29.670000 ( 29.672696)

patched
$ bundle exec rake 'bench_cop[Style/ExtraSpacing, ., 4]''
Benchmarking Style/ExtraSpacing on . (using default config)
(4 iterations, 811 files)
Finished parsing source, testing inspection...
  2.050000   0.020000   2.070000 (  2.070606)
```

```sh
before patch
$ time rubocop --cache false
814 files inspected, no offenses detected

real    0m43.040s
user    0m42.967s
sys     0m0.070s

patched
$ time rubocop --cache false
814 files inspected, no offenses detected

real    0m33.462s
user    0m33.407s
sys     0m0.047s
```

jonas054/rubocop,jonas054/rubocop