MDL-62497 admin_tool: change user tours from third party lib to core

.eslintignore

@@ -4,7 +4,6 @@
 node_modules/
 vendor/
 admin/tool/policy/amd/src/jquery-eu-cookie-law-popup.js
-admin/tool/usertours/amd/src/tour.js
 auth/cas/CAS/
 cache/stores/mongodb/MongoDB/
 enrol/lti/ims-blti/

.stylelintignore

@@ -5,7 +5,6 @@ theme/classic/style/moodle.css
 node_modules/
 vendor/
 admin/tool/policy/amd/src/jquery-eu-cookie-law-popup.js
-admin/tool/usertours/amd/src/tour.js
 auth/cas/CAS/
 cache/stores/mongodb/MongoDB/
 enrol/lti/ims-blti/

admin/tool/usertours/amd/readme_moodle.txt

@@ -1,10 +0,0 @@
-Description of External library imports into Moodle
-
-Flexitour Instructions
-----------------------
-1. Clone https://github.com/andrewnicols/flexitour into an unrelated directory
-2. Copy /build/tour.js to amd/src/tour.js
-3. Open the amd/src/tour.js file and find the AMD module define.
-4. Change the "popper" inclusion to "core/popper"
-5. Update thirdpartylibs.xml
-6. Run `grunt amd`

admin/tool/usertours/thirdpartylibs.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0"?>
-<libraries>
-  <library>
-    <location>amd/src/tour.js</location>
-    <name>Flexitour</name>
-    <license>GPLv3</license>
-    <version>0.12.3</version>
-    <licenseversion>3</licenseversion>
-  </library>
-</libraries>