This dialog is displayed e.g. when using the Insert image or media or Insert link actions in the WYSIWYG editor or when selecting an image in the Editable image web part.
You can hide the dialog's tabs - Attachments, Content, Media libraries, Web, Anchor and E-mail.
UI elements are defined centrally in the Media dialog module. They are applied to all occurrences and versions of the dialog, even though some of these tabs are not displayed in all cases (e.g. the E-mail tab is not displayed in Insert image or media dialog).