diff --git a/includes/database/database.inc b/includes/database/database.inc
index e27aed80772..5063b4233ff 100644
--- a/includes/database/database.inc
+++ b/includes/database/database.inc
@@ -2494,10 +2494,6 @@ function db_fetch_object(DatabaseStatementInterface $statement) {
   return $statement->fetch(PDO::FETCH_OBJ);
 }
 
-function db_fetch_array(DatabaseStatementInterface $statement) {
-  return $statement->fetch(PDO::FETCH_ASSOC);
-}
-
 function db_result(DatabaseStatementInterface $statement) {
   return $statement->fetchField();
 }
@@ -2561,21 +2557,6 @@ function _db_query_process_args($query, $args, $options) {
   return array($query, $args, $options);
 }
 
-
-/**
- * Returns the last insert id.
- *
- * @todo Remove this function when all queries have been ported to db_insert().
- * @param $table
- *   The name of the table you inserted into.
- * @param $field
- *   The name of the autoincrement field.
- */
-function db_last_insert_id($table, $field) {
-  $sequence_name = Database::getConnection()->makeSequenceName($table, $field);
-  return Database::getConnection()->lastInsertId($sequence_name);
-}
-
 /**
  * Helper function for db_rewrite_sql.
  *
@@ -2693,21 +2674,6 @@ function db_rewrite_sql($query, $primary_table = 'n', $primary_field = 'nid',  $
   return $query;
 }
 
-/**
- * Ensures the environment for a Drupal database on a predefined connection.
- *
- * This will run tasks that check that Drupal can perform all of the functions
- * on a database, that Drupal needs. Tasks include simple checks like CREATE
- * TABLE to database specfic functions like stored procedures and client 
- * encoding.
- */
-function db_run_tasks($driver) {
-  $task_class = 'DatabaseTasks_' . $driver;
-  $DatabaseTasks = new $task_class();
-  $DatabaseTasks->runTasks();
-  return true;
-}
-
 /**
  * @} End of "ingroup database-legacy".
  */
diff --git a/includes/install.inc b/includes/install.inc
index f145f4ec87e..01864cd3140 100644
--- a/includes/install.inc
+++ b/includes/install.inc
@@ -1083,8 +1083,8 @@ function install_profile_info($profile, $locale = 'en') {
     );
     $info = drupal_parse_info_file("profiles/$profile/$profile.info") + $defaults;
     $info['dependencies'] = array_unique(array_merge(
-      drupal_required_modules(), 
-      $info['dependencies'], 
+      drupal_required_modules(),
+      $info['dependencies'],
       ($locale != 'en' && !empty($locale) ? array('locale') : array()))
     );
     $cache[$profile] = $info;
@@ -1092,3 +1092,17 @@ function install_profile_info($profile, $locale = 'en') {
   return $cache[$profile];
 }
 
+/**
+ * Ensures the environment for a Drupal database on a predefined connection.
+ *
+ * This will run tasks that check that Drupal can perform all of the functions
+ * on a database, that Drupal needs. Tasks include simple checks like CREATE
+ * TABLE to database specfic functions like stored procedures and client
+ * encoding.
+ */
+function db_run_tasks($driver) {
+  $task_class = 'DatabaseTasks_' . $driver;
+  $DatabaseTasks = new $task_class();
+  $DatabaseTasks->runTasks();
+  return true;
+}
diff --git a/includes/menu.inc b/includes/menu.inc
index 82772b4265a..be222026b1d 100644
--- a/includes/menu.inc
+++ b/includes/menu.inc
@@ -1119,7 +1119,6 @@ function menu_tree_collect_node_links(&$tree, &$node_links) {
 function menu_tree_check_access(&$tree, $node_links = array()) {
 
   if ($node_links) {
-    // Use db_rewrite_sql to evaluate view access without loading each full node.
     $nids = array_keys($node_links);
     $select = db_select('node');
     $select->addField('node', 'nid');
@@ -1269,7 +1268,7 @@ function theme_menu_tree($tree) {
  * The menu item's LI element is given one of the following classes:
  * - expanded: The menu item is showing its submenu.
  * - collapsed: The menu item has a submenu which is not shown.
- * - leaf: The menu item has no submenu. 
+ * - leaf: The menu item has no submenu.
  *
  * @ingroup themeable
  *
diff --git a/modules/field/field.test b/modules/field/field.test
index 84853b715cd..84fbf0cc397 100644
--- a/modules/field/field.test
+++ b/modules/field/field.test
@@ -1358,7 +1358,7 @@ class FieldCrudTestCase extends DrupalWebTestCase {
     // Simulate a stored field definition missing a field setting (e.g. a
     // third-party module adding a new field setting has been enabled, and
     // existing fields do not know the setting yet).
-    $data = db_result(db_query('SELECT data FROM {field_config} WHERE field_name = :field_name', array(':field_name' => $field_definition['field_name'])));
+    $data = db_query('SELECT data FROM {field_config} WHERE field_name = :field_name', array(':field_name' => $field_definition['field_name']))->fetchField();
     $data = unserialize($data);
     $data['settings'] = array();
     db_update('field_config')
@@ -1588,7 +1588,7 @@ class FieldInstanceCrudTestCase extends DrupalWebTestCase {
     // Simulate a stored instance definition missing various settings (e.g. a
     // third-party module adding instance, widget or display settings has been
     // enabled, but existing instances do not know the new settings).
-    $data = db_result(db_query('SELECT data FROM {field_config_instance} WHERE field_name = :field_name AND bundle = :bundle', array(':field_name' => $this->instance_definition['field_name'], ':bundle' => $this->instance_definition['bundle'])));
+    $data = db_query('SELECT data FROM {field_config_instance} WHERE field_name = :field_name AND bundle = :bundle', array(':field_name' => $this->instance_definition['field_name'], ':bundle' => $this->instance_definition['bundle']))->fetchField();
     $data = unserialize($data);
     $data['settings'] = array();
     $data['widget']['settings'] = array();