Remove wrong javadoc comment

Contrary to what the comment of SharedPreferences.Editor.putString()
says, a call to putString(key, null) is not equivalent to remove(key),
at least with SharedPreferencesImpl, backed by a HashMap.

Instead, it associates a null item to the key.

Signed-off-by: Romain Vimont <rom@rom1v.com>
1 file changed