oh-image-minimal: use remove_packaging_data_files() function instead of manually remove dirs

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@2008 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/packages/images/oh-image-minimal.bb

@@ -10,4 +10,4 @@ IMAGE_LINGUAS = " "
 require poky-image.inc
 
 # remove not needed ipkg informations
-ROOTFS_POSTPROCESS_COMMAND += "rm -rf ${IMAGE_ROOTFS}/usr/lib/ipkg/"
+ROOTFS_POSTPROCESS_COMMAND += "remove_packaging_data_files"