`cljr-clean-ns` removes used CLJS import

[xiongtx]

Expected behavior

cljr-clean-ns does not remove used import.

Actual behavior

In a CLJS file, given the following:

(ns foo.bar
  (:import [goog.i18n NumberFormat]
           [goog.i18n.NumberFormat Format]))

(defn money [n]
  (let [fmt (NumberFormat. Format.CURRENCY)]
    (.format fmt n)))

cljr-clean-ns removes the goog.i18n.NumberFormat Format import.

Steps to reproduce the problem

As above

Environment & Version information

clj-refactor.el version information

clj-refactor 2.4.0-SNAPSHOT (package: 20171117.317), refactor-nrepl 2.4.0-SNAPSHOT

CIDER version information

;; CIDER 0.16.0snapshot (package: 20171001.112), nREPL 0.2.13
;; Clojure 1.9.0, Java 1.8.0_151

Leiningen or Boot version

Leiningen 2.8.1

Emacs version

26.0.50

Operating system

OS X 10.11.6 "El Capitan"