xbps-src: remove stupid workaround to sleep for a second.

This was added to make sure pkg file metadata contains a different mtime
(in seconds precision), but building multiple pkgs in less than a second
will be really strange.

common/xbps-src/libexec/build.sh

@@ -75,7 +75,6 @@ done
 # If install went ok generate the binpkgs.
 for subpkg in ${subpackages} ${sourcepkg}; do
     $XBPS_LIBEXECDIR/xbps-src-dopkg.sh $subpkg "$XBPS_REPOSITORY" "$XBPS_CROSS_BUILD" || exit 1
-    sleep 1
 done
 
 # pkg cleanup