xbps-src: drop fakeroot; xbps-create(8) is our friend.

- This should work for almost 90% current packages, as reported by OpenBSD/ports.
- Packages that use install -o <user> -g <group>  will get fixed progressively.
- xbps-create(8) by default sets pkg files as 0:0, if any pkg needs special
  permissions those can be set via INSTALL scripts (for now).

common/xbps-src/shutils/cross.sh

@@ -13,7 +13,7 @@ remove_pkg_cross_deps() {
         XBPS_REMOVE_XCMD="env XBPS_TARGET_ARCH=$XBPS_TARGET_ARCH xbps-remove -r /usr/$XBPS_CROSS_TRIPLET"
     fi
 
-    $FAKEROOT_CMD $XBPS_REMOVE_XCMD -Ryo > $tmplogf 2>&1
+    $XBPS_REMOVE_XCMD -Ryo > $tmplogf 2>&1
     if [ $? -ne 0 ]; then
         msg_red "${pkgver:-xbps-src}: failed to remove autocrossdeps:\n"
         cat $tmplogf && rm -f $tmplogf