Remove broken reference to unused tox

pandoc-xnos.scm

-(use-modules ((gnu packages python-xyz) #:select (python-psutil python-tox))
+(use-modules ((gnu packages python-xyz) #:select (python-psutil))
              ((gnu packages textutils) #:select (python-pandocfilters))
              (guix build-system python)
              ((guix download) #:select (url-fetch))
@@ -15,18 +15,17 @@
       (sha256
         (base32 "1bjhwbfz67fm8ckvhhadi7y82cnlv2mnarfwfg2wwklyi667663w"))))
   (build-system python-build-system)
-  ;(native-inputs (list pandoc python-tox))
   (arguments
-	`(#:tests? #f
-	  #:phases
-	  (modify-phases %standard-phases
-					 (replace 'check
-							  (lambda* (#:key tests? #:allow-other-keys)
-									   (if tests?
-										 (begin
-										   (invoke "ls")
-										   (invoke "pwd")
-										   (invoke "./test/test.py"))))))))
+    `(#:tests? #f
+      #:phases
+      (modify-phases %standard-phases
+                     (replace 'check
+                              (lambda* (#:key tests? #:allow-other-keys)
+                                       (if tests?
+                                         (begin
+                                           (invoke "ls")
+                                           (invoke "pwd")
+                                           (invoke "./test/test.py"))))))))
   (propagated-inputs (list python-pandocfilters python-psutil))
   (home-page "https://github.com/tomduck/pandoc-xnos")
   (synopsis "Library code for the pandoc-xnos filter suite.")