DOC-3306: Remove broken redirect for tinymce-and-csp. (#3962)

Author: kemister85

redirects.json

@@ -3290,10 +3290,6 @@
     "location": "/docs/tinymce/latest/templates/",
     "redirect": "/docs/tinymce/latest/advanced-templates/"
   },
-  {
-    "location": "/docs/tinymce/latest/tinymce-and-csp/",
-    "redirect": "/docs/"
-  },
   {
     "location": "/docs/tinymce/latest/yeoman-generator/",
     "redirect": "/docs/"