bug 189043: remove unused icons and correct a typo. patch by Simon Paquet, r=me

browser/base/skin/jar.mn

@@ -7,8 +7,6 @@ classic.jar:
         skin/classic/browser/Close-tab.png 
         skin/classic/browser/Go.png 
         skin/classic/browser/Info.png 
-        skin/classic/browser/lock-insecure.gif 
-        skin/classic/browser/lock-mixed.gif 
         skin/classic/browser/pageInfo.css 
         skin/classic/browser/page-themes.png 
         skin/classic/browser/Search-bar.png 

toolkit/skin/win/jar.mn

@@ -31,7 +31,6 @@ classic.jar:
 +  skin/classic/global/toolbar.css
 +  skin/classic/global/globalBindings.xml
 +  skin/classic/global/Preview.png
-+  skin/classic/global/toolbar.gif
 +  skin/classic/global/arrow/arrow-dn-dis.gif                     (arrow/arrow-dn-dis.gif)
 +  skin/classic/global/arrow/arrow-dn-hov.gif                     (arrow/arrow-dn-hov.gif)
 +  skin/classic/global/arrow/arrow-dn-sharp.gif                   (arrow/arrow-dn-sharp.gif)
@@ -74,7 +73,7 @@ classic.jar:
 +  skin/classic/global/progressmeter/progressmeter-busy.gif       (progressmeter/progressmeter-busy.gif)
 +  skin/classic/global/radio/radio-check-dis.gif                  (radio/radio-check-dis.gif)
 +  skin/classic/global/radio/radio-check.gif                      (radio/radio-check.gif)
-+  skin/classic/global/scrollbar/slider/gif                       (scrollbar/slider.gif)
++  skin/classic/global/scrollbar/slider.gif                       (scrollbar/slider.gif)
 +  skin/classic/global/toolbar/Lighten.png                        (toolbar/Lighten.png)
 +  skin/classic/global/toolbar/chevron.gif                        (toolbar/chevron.gif)
 +  skin/classic/global/toolbar/spacer-lft.gif                     (toolbar/spacer-lft.gif)