Revert "add restore test against 3.9"

This reverts commit 7f4301a.

Author: brandonemlaw

test/test-ghe-restore.sh

@@ -454,32 +454,6 @@ begin_test "ghe-restore with secret scanning encrypted secrets encryption keys f
 )
 end_test
 
-begin_test "ghe-restore with secret scanning encrypted content encryption keys for versions below 3.10.0"
-(
-  set -e
-  rm -rf "$GHE_REMOTE_ROOT_DIR"
-  setup_remote_metadata
-
-  required_files=(
-    "secret-scanning-user-content-delimited-encryption-root-keys"
-  )
-
-  for file in "${required_files[@]}"; do
-    echo "foo" >"$GHE_DATA_DIR/current/$file"
-  done
-
-  GHE_REMOTE_VERSION=3.9.0 ghe-restore -v -f localhost
-
-  required_secrets=(
-    "secrets.secret-scanning.secret-scanning-user-content-delimited-encryption-root-keys"
-  )
-
-  for secret in "${required_secrets[@]}"; do
-    [ "$(ghe-ssh "$GHE_HOSTNAME" -- ghe-config "$secret")" = "" ] # expecting that this secret was not backed up on versions below 3.11.0, this secret was not present in earlier versions
-  done
-)
-end_test
-
 begin_test "ghe-restore with secret scanning encrypted content encryption keys for versions below 3.11.0"
 (
   set -e