core: Drop --link-cache option, we do it by default now for archives

tests/t0000-basic.sh

@@ -19,7 +19,7 @@
 
 set -e
 
-echo "1..31"
+echo "1..30"
 
 . libtest.sh
 
@@ -212,14 +212,6 @@ cd test2
 assert_file_has_content ./yet/another/tree/green "leaf"
 echo "ok checkout short form"
 
-cd ${test_tmpdir}
-rm -rf test2
-mkdir linkcache
-$OSTREE checkout --link-cache=linkcache test2 test2-checkout-from-link-cache
-cd test2-checkout-from-link-cache
-assert_file_has_content ./yet/another/tree/green "leaf"
-echo "ok checkout link cache"
-
 cd ${test_tmpdir}
 rm -rf shadow-repo
 mkdir shadow-repo

tests/t0001-archive.sh

@@ -21,7 +21,7 @@ set -e
 
 . libtest.sh
 
-echo '1..23'
+echo '1..22'
 
 setup_test_repository "archive"
 echo "ok setup"
@@ -97,14 +97,6 @@ cd ${test_tmpdir}
 $OSTREE checkout test2 checkout-test2-from-unpacked
 echo "ok checkout union 2"
 
-cd ${test_tmpdir}
-rm -rf test2
-mkdir linkcache
-$OSTREE checkout --user-mode --link-cache=linkcache test2 test2
-cd test2
-assert_file_has_content baz/cow moo
-echo "ok checkout link cache"
-
 $OSTREE pack --metadata-only
 echo "ok pack metadata"