TSLint: Fix unpermitted comments in VS Code's json

Before this change, each removed line caused [1] in VS Code. This file's
extension being json and not jsonc, it shouldn't contain comments.

[1] Comments are not permitted in JSON. (521)

These removed lines can always be retrieved through file's git history,
making these comments unnecessary.

Signed-off-by: Marco Miller <marco.miller@ericsson.com>

Author: marco-miller

tslint.json

@@ -8,10 +8,6 @@
       ],
       "curly": true,
       "eofline": true,
-      // "file-header": [
-      //   true,
-      //   "Copyright"
-      // ],
       "forin": true,
       "indent": {
         "options": [