Update comment about missing NEWLINE
```console
$ echo -n 'import sys' | ~/.pyenv/versions/py3.6.5/bin/tokenize-rt /dev/stdin
1:0 NAME 'import'
?:? UNIMPORTANT_WS ' '
1:7 NAME 'sys'
2:0 ENDMARKER ''
```
@@ -731,7 +731,7 @@ def _fix_import_removals(
found.append(i)
i += 1
# depending on the version of python, some will not emit NEWLINE('') at the
- # end of a file which does not end with a newline (for example 2.7.6)
+ # end of a file which does not end with a newline (for example 3.6.5)
if tokens[i].name == 'ENDMARKER': # pragma: no cover
i -= 1
