prefix is unused when all implementations have constructors

Change-Id: I5d2efaa16932c0014cfb7491136b5d37f3e6dded
Reviewed-on: https://gerrit.libreoffice.org/51160Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

vcl/vcl.common.component

@@ -18,7 +18,7 @@
 -->
 
 <component loader="com.sun.star.loader.SharedLibrary" environment="@CPPU_ENV@"
-    prefix="vcl" xmlns="http://openoffice.org/2010/uno-components">
+    xmlns="http://openoffice.org/2010/uno-components">
   <implementation name="com.sun.star.comp.graphic.GraphicProvider"
       constructor="com_sun_star_comp_graphic_GraphicProvider_get_implementation">
     <service name="com.sun.star.graphic.GraphicProvider"/>