Remove automated closing bracket comments in IntelliJ IDEA
The checkbox is in Settings (Preferences) | Editor | General | Appearance, toggle 'Show closing labels in Dart source code'.
And in the vs code editor, change this setting to false
"dart.closingLabels": true
You can find this setting easily. Go setting and search(Ctrl+f) dart.closingLabels
Update 24.11.2019:
If you want to customize the closing label color, you can do this. In vscode, open your settings.json
file and set this setting
"workbench.colorCustomizations": { "dart.closingLabels": "#FF5733" },