You can override the existing layout. For example copy clients/base/layouts/record/record.php to custom/clients/base/layouts/record/record.php and remove the section related to the dashboard-pane. this will then remove dashboards from all record views.
This can also be done for a single module instead of the entire application.
As a developer, you can extend all layouts.
However, I would advise against removing the dashlet-pane as there is so much functionality that can be added in this pane. This is also the recommended place to add new functionality!
You can override the existing layout. For example copy clients/base/layouts/record/record.php to custom/clients/base/layouts/record/record.php and remove the section related to the dashboard-pane. this will then remove dashboards from all record views.
This can also be done for a single module instead of the entire application.
As a developer, you can extend all layouts.
However, I would advise against removing the dashlet-pane as there is so much functionality that can be added in this pane. This is also the recommended place to add new functionality!