webmin: remove init script for gentoo

The configure.initd.gentoo script is used for gentoo, it is invalid for oe. So
remove it to solve the following warning:

webmin-1.700: webmin-module-ajaxterm requires /sbin/runscript, but no providers
in its RDEPENDS [file-rdeps]

Signed-off-by: Chong Lu <Chong.Lu@windriver.com>

meta-webserver/recipes-webadmin/webmin/webmin_1.700.bb

@@ -82,6 +82,7 @@ do_install() {
     install -d ${D}${libexecdir}/webmin
     cp -pPR ${S}/* ${D}${libexecdir}/webmin
     rm -f ${D}${libexecdir}/webmin/webmin-init
+    rm -f ${D}${libexecdir}/webmin/ajaxterm/ajaxterm/configure.initd.gentoo
     rm -rf ${D}${libexecdir}/webmin/patches
 
     # Run setup script