Contacts: Remove unused strings

    <!-- String used to display calls from unknown numbers in the call log -->

    <string name="unknown">Unknown</string>

    <!-- Dialog title when prompting before creating a contact -->

    <string name="add_contact_dlg_title">Add contact</string>

    <!-- Dialog title shown when (USB) storage does not exist [CHAR LIMIT=25] -->

    <string name="no_sdcard_title" product="nosdcard">Storage unavailable</string>

    <!-- Dialog title shown when SD Card does not exist -->

    <string name="no_sdcard_title" product="default">No SD card</string>

    <string name="copy_to_target_sim">SIM card</string>

    <string name="copy_to_target_msim">SIM card <xliff:g id="index">%d</xliff:g></string>

    <string name="edit_before_call">Edit number before call</string>

    <!-- Title of the alert dialog when the user hits the Cancel button in the

         editor [CHAR LIMIT=64] -->

    <string name="cancel_confirmation_dialog_title">Discard changes</string>

    <!-- String describing the button to Video call a number or contact.

        Note: AccessibilityServices use this attribute to announce what the view represents.

    -->

    <string name="description_dial_vt">Dial VT <xliff:g id="name">%1$s</xliff:g></string>

    <string name="label_groups">Group</string>

    <string name="title_group_name">Group name</string>

    <string name="title_group_add">New group</string>

    <string name="group_selector">Click to select group</string>

    <string name="title_group_picker">Group select</string>

    <string name="noGroupsHelpText">"No local groups."</string>

    <string name="group_list_head">All groups</string>

    <string name="menu_option_add">Add group</string>

    <string name="menu_option_delete">Delete group</string>

    <string name="toast_not_add">"Unable to add all contacts in non-local accounts"</string>

    <string name="noMember">No members in this group.</string>

    <string name="title_group_edit">Group edit</string>

    <string name="button_delete">Remove</string>

    <string name="summary_add_members">Add contacts to group</string>

    <string name="title_members_list">Members of group</string>

    <string name="title_add_members">Add members</string>

    <string name="contactsLocalGroupsLabel">Local groups</string>

    <string name="select_all">All</string>

    <string name="action_done">Done</string>

    <string name="delete_call_alert">Delete selected call logs?</string>

    <string name="title_del_call">Delete</string>

    <string name="no_data_found">No data found</string>

    <string name="menu_sendViaSMS">Send contact via SMS</string>

    <string name="title_switch_group_remote">Remote groups</string>

    <string name="title_switch_group_local">Local groups</string>

    </plurals>

    <string name="delete_contacts_title">Delete contacts</string>

    <string name="delete_contacts_message">Deleting contacts\u2026</string>

    <string name="delete_termination">Contact deletion finished</string>

    <string name="error_group_exist">A group named \'<xliff:g id="name">%s</xliff:g>\' already exists</string>

    <string name="menu_memory_status">Memory status</string>

    <string name="memory_status_title">Memory status</string>

    <string name="memory_size">Total:</string>

    <string name="memory_available">Available:</string>

    <string name="memory_used">Used:</string>

    <string name="calculating_status_now">Calculating status\u2026</string>