Maybe your Jshint options are overridden by a .jshinrc file. According to SublimeLinter README file :
SublimeLinter supports
.jshintrc
files. If using JSHint, SublimeLinter will recursively search the directory tree (from the file location to the file-system root directory). This functionality is specified in the JSHint README.
and
The jshint follows convention set by node-jshint (though node is not required) and will attempt to locate the configuration file for you starting in pwd. (or "present working directory") If this does not yield a .jshintrc file, it will move one level up (..) the directory tree all the way up to the filesystem root. If a file is found, it stops immediately and uses that set of configuration instead of "jshint_options".