Remove unused variables.

includes/solution_packs.inc

@@ -386,7 +386,6 @@ function islandora_install_solution_pack($module, $op = 'install', $force = FALS
     drupal_set_message(filter_xss($msg), 'error');
     return;
   }
-  $connection = islandora_get_tuque_connection();
   $required_objects = islandora_solution_packs_get_required_objects($module);
   $objects = $required_objects['objects'];
   $status_messages = array(
@@ -474,7 +473,6 @@ function islandora_uninstall_solution_pack($module, $force = FALSE) {
     drupal_set_message(filter_xss($msg), 'error');
     return;
   }
-  $connection = islandora_get_tuque_connection();
   $required_objects = islandora_solution_packs_get_required_objects($module);
   $objects = $required_objects['objects'];
   $filter = function ($o) {