Fixed following SonarQube code smells:

1) Remove this useless assignment to a variable.
2) Remove the unused local variable.

web/pgadmin/tools/erd/tests/test_tables.py

@@ -52,7 +52,7 @@ class ERDTables(BaseTestGenerator):
                 tables_utils.create_table(self.server, self.db_name, tab[0],
                                           tab[1])
                 connection.close()
-        except Exception as _:
+        except Exception:
             self.dropDB()
             raise
 

web/pgadmin/tools/import_export_servers/__init__.py

@@ -174,7 +174,7 @@ def load_servers():
 
             for item in groups:
                 all_servers.append(groups[item])
-        except Exception as e:
+        except Exception:
             return internal_server_error(
                 _('Unable to load the specified file.'))
     else:

web/pgadmin/tools/psql/__init__.py

@@ -492,7 +492,7 @@ def socket_input(data):
                 enter_key_press(data)
             else:
                 other_key_press(data)
-    except Exception as e:
+    except Exception:
         # Delete socket id from sessions.
         # request.sid: refer request.sid as socket id.
         sio.emit('pty-output',

web/pgadmin/tools/sqleditor/static/js/sqleditor.js

@@ -765,7 +765,6 @@ define('tools.querytool', [
       /* If sql editor is in a new tab, event fired is not available
        * instead, a poller is set up who will check
        */
-      //var browser_qt_preferences = pgBrowser.get_preferences_for_module('browser');
       var open_new_tab_qt = self.browser_preferences.new_browser_tab_open;
       if(open_new_tab_qt && open_new_tab_qt.includes('qt')) {
         pgBrowser.bind_beforeunload();
@@ -2010,7 +2009,7 @@ define('tools.querytool', [
               method: 'DELETE',
               contentType: 'application/json',
             })
-              .done(function() {})
+              .done(function() { /* This is intentional */ })
               .fail(function() {
               /* history clear fail should not affect query tool */
               });
@@ -2437,7 +2436,7 @@ define('tools.querytool', [
                   },
                 };
               },
-              build:function() {},
+              build:function() {/* */},
               settings:{
                 message: null,
               },
@@ -2517,7 +2516,7 @@ define('tools.querytool', [
                 function() {
                   self.initTransaction();
                 },
-                function(error) {
+                function() {
                   pgBrowser.Events.trigger(
                     'pgadmin:query_tool:connected_fail:' + self.transId, xhr, error
                   );
@@ -3430,8 +3429,8 @@ define('tools.querytool', [
           contentType: 'application/json',
           data: JSON.stringify(history_entry),
         })
-          .done(function() {})
-          .fail(function() {});
+          .done(function() { /* This is intentional */ })
+          .fail(function() { /* This is intentional */ });
 
         self.gridView.history_collection.add(history_entry);
       },
@@ -5159,7 +5158,7 @@ define('tools.querytool', [
         if(data.data_obj.db_id == db_did && !_.isEqual(db_name, data.data_obj.db_name)) {
 
           var message = `Current database has been moved or renamed to ${data.data_obj.db_name}. Click on the OK button to refresh the database name.`,
-            title = self.url_params.title;
+            title = '';
 
           if(self.is_query_tool) {// for query tool
 

web/pgadmin/tools/sqleditor/utils/save_changed_data.py

@@ -271,7 +271,7 @@ def save_changed_data(changed_data, columns_info, conn, command_obj,
                     else:
                         status, res = conn.execute_void(
                             item['sql'], item['data'])
-                except Exception as _:
+                except Exception:
                     failure_handle(res, item.get('row_id', 0))
                     raise