Do not migrate old (per-user/shared) script provider extensions

... for BeanShell and Javascript, which have been changed from bundled extensions to plain
code parts a while ago already; but just in case...

Change-Id: I92f25a9607f8cdf7ec6c90ee615281317d1ec6e4

officecfg/registry/data/org/openoffice/Setup.xcu

@@ -798,6 +798,8 @@
                     <!-- arguably, dropping PDFImport extensions should be
                          conditional on having in-core PDF import actually built
                          and installed -->
+                <it>com.sun.star.script.provider.ScriptProviderForBeanShell</it>
+                <it>com.sun.star.script.provider.ScriptProviderForJavaScript</it>
                 <it>com.sun.star.script.provider.ScriptProviderForPython</it>
               </value>
             </prop>