remove broken git-svn feature

[[Imported from SVN: r5561]]

bin/dunecontrol

@@ -256,15 +256,6 @@ run_default_status () {
 }
 
 run_default_update () {
-  if test -d .git/svn && type git > /dev/null &&
-      test x`git config --get dune.autoupdate` = xtrue; then
-      git checkout master
-      git svn rebase
-      echo '*.o *.lo *.la #*# .*.rej *.rej .*~ *~ .#* .DS_Store' | tr ' ' '\n' \
-          > .git/info/exclude
-      git svn show-ignore >> .git/info/exclude
-      return
-  fi
   if test -d .svn; then
     svn update
     return