Issue #3479235: Remove the Tour Example module

Closes #3479235

modules/tour_example/config/install/tour.tour.tour-example.yml

-# This file defines the tour for our example page. There should be one tour
-# file for each tour that you create. These tour files should be placed in a
-# module's 'config' folder and named using the pattern
-# 'tour.tour.{tour-id}.yml'.
-#
-# Each tour file has two parts: 1) The tour properties, and 2) the tip
-# definitions.
-#
-#
-# TOUR PROPERTIES
-#
-# The tour properties define information that applies to the tour as a whole.
-# Properties that you can define for your tours include the following:
-#
-#   id:         Each tour should have a unique ID. This id is used in the
-#               filename and appears as an ID in the HTML.
-#   module:     The machine name of the module containing your tour.
-#   label:      A human readable name for the tour.
-#   status:     A boolean, defining whether the tour is enabled.
-#   langcode:   A two-letter language code defining the language of your tour.
-#   routes:     An array of routes for which the tour is active. Specify these
-#               as an array with route_name and optional route_params (also an
-#               array). Route names are found in each module's routing.yml file.
-#
-#
-# TIP DEFINITIONS
-#
-# Here, you define each tip that you want to appear in your tour. Each of
-# the tips have properties that must be defined, including the following:
-#
-#   id:         Each tip needs a unique ID. This appears as an ID in the HTML.
-#   plugin:     The Tour API uses plugins for defining different types of
-#               tips. The 'text' plugin (for making text tooltips) is provided
-#               in core, but developers can define additional plugins for tips
-#               containing images, video, or other interactions.
-#   label:      The label for the tip. This will be rendered in a <h3> element.
-#   body:       The body of the tip. HTML markup is allowed.
-#   weight:     Tips within a tour are ordered by weight, beginning with the
-#               lowest number. Negative values are acceptable.
-#   position:   Defines the position of the tip, relative to its target.
-#               Acceptable values include: 'auto', 'auto-start', 'auto-end',
-#               'top', 'top-start', 'top-end', 'bottom', 'bottom-start',
-#               'bottom-end', 'right', 'right-start', 'right-end', 'left',
-#               'left-start', 'left-end'. Default: auto.
-#   selector:   The HTML element you want to attach the tip to.  You can use
-#               classes (.class-name), ID's (#id-name), a combination of both,
-#               and even complex elements like (.action-links
-#               a[href="/admin/structure/forum/add/forum"])
-#
-#               If you omit, the tip will be shown as modal instead of being
-#               targeted to an element.
-#
-id: tour-example
-module: tour_example
-label: 'Tour an example admin page'
-langcode: en
-routes:
-  - route_name: tour_example.description
-tips:
-  introduction:
-    id: introduction
-    plugin: text
-    label: 'Introduction'
-    body: 'This is an example tour. Click "next" to continue through the tour.'
-    weight: 1
-  first-item:
-    id: first-item
-    plugin: text
-    label: 'First Item'
-    body: 'Tours are helpful for walking users through an unfamiliar admin interface.'
-    weight: 2
-    position: bottom
-    selector: '#tour-target-1'
-  second-item:
-    id: second-item
-    plugin: text
-    label: 'Second Item'
-    body: 'Individual tips can be positioned anywhere on the page.'
-    weight: 3
-    position: top
-    selector: '#tour-target-2'
-  third-item:
-    id: third-item
-    plugin: text
-    label: 'Third Item'
-    body: 'You can click the X in the top right corner of this box to close the tour at any time.'
-    weight: 4
-    position: bottom
-    selector: '#tour-target-3'
-  fourth-item:
-    id: fourth-item
-    plugin: text
-    label: 'Fourth Item'
-    body: 'When the tour is over, click "End Tour".'
-    weight: 5
-    position: left
-    selector: '#tour-target-4'