ui: cleanup some usings.

basis/ui/pens/gradient/gradient.factor

@@ -1,8 +1,8 @@
 ! Copyright (C) 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel accessors math math.vectors locals sequences
-specialized-arrays colors arrays combinators alien.data
-opengl opengl.gl ui.pens ui.pens.caching ;
+USING: accessors alien.data arrays colors combinators kernel
+locals math math.vectors opengl opengl.gl sequences
+specialized-arrays ui.pens ui.pens.caching ;
 FROM: alien.c-types => float ;
 SPECIALIZED-ARRAY: float
 IN: ui.pens.gradient

basis/ui/pens/image/image.factor

@@ -1,7 +1,7 @@
 ! Copyright (C) 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel accessors sequences fry math
-opengl ui.pens ui.images io.pathnames ;
+USING: accessors fry kernel math opengl sequences ui.images
+ui.pens ;
 IN: ui.pens.image
 
 ! Image pen

basis/ui/text/text.factor

@@ -1,8 +1,8 @@
 ! Copyright (C) 2009, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel arrays assocs sequences math math.order cache
-opengl opengl.gl opengl.textures strings fonts colors accessors
-namespaces ui.gadgets.worlds ;
+USING: accessors arrays assocs cache combinators fonts kernel
+math math.order namespaces opengl opengl.gl opengl.textures
+sequences strings system ui.gadgets.worlds vocabs ;
 IN: ui.text
 
 <PRIVATE
@@ -79,8 +79,6 @@ M: array draw-text
         ] with each
     ] do-matrix ;
 
-USING: vocabs system combinators ;
-
 {
     { [ os macosx? ] [ "core-text" ] }
     { [ os windows? ] [ "uniscribe" ] }