message: Fix issue with removing a syncked Table with primary key
diff: @@ -399,7 +399,7 @@ void Table::remove_column(ColKey col_key)
  repl->erase_column(this, col_key); // Throws
  if (col_key == m_primary_key_col) {
  - set_primary_key_column(ColKey());
  + do_set_primary_key_column(ColKey());
  }
  bump_content_version();
  bump_storage_version();
  