Websitecode

This plugin adds a “Delete” link below comments made by logged-in users, allowing them to delete their own comments via AJAX, without page reload. Editing comments is not allowed.

User Comment Delete

Allows logged-in users to delete their own comments via a Delete link under each comment.

cmc3215

Allow users with specific WordPress roles to delete themselves from the Your Profile page or anywhere Shortcodes can be used using the Shortcode <code>[plugin_delete_me /]</code>. 
Settings for this plugin are found on the Settings -> Delete Me subpanel. Multisite and Network Activation supported.
How it works:
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A user clicks the delete link, which defaults to “Delete Account”, but can be changed.
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User is asked to confirm they want to delete themselves.
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If confirmed, user and all their Posts, Links, and (optionally) Comments are deleted.
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Deleted user (optionally) redirected to landing page URL, default is homepage, can be changed or left blank.
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Settings available:
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Enable or disable Network Wide, which applies a single page of settings across all Multisite network Sites.
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Select specific WordPress roles (e.g. Subscriber) you want to allow to delete themselves using Delete Me.
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<code>class</code> and <code>style</code> attributes of the delete link.
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<code><a></code> tag clickable content of the delete link.
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Landing page URL.
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Your Profile confirmation page Heading, Warning, Password (optionally require password), Button.
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Enable or disable delete link on the Your Profile page.
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Javascript confirm text for Shortcode.
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Enable or disable Javascript confirm for Shortcode.
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Enable or disable using a form (require password) instead of a link for Shortcode.
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Multisite: Delete user from entire Network or current Site only.
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Delete comments.
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E-mail notification when a user deletes themselves.
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Delete Me

Great!

Allow users with specific WordPress roles to delete themselves from the Your Profile page or anywhere Shortcodes can be used.

User Comment Delete vs Delete Me