Remove Code School icon

Code School was aquired by Pluralsight (for which an icon is already
present).

_data/simple-icons.json

@@ -300,11 +300,6 @@
             "hex": "3E8DCC",
             "source": "https://github.com/twolfson/coderwall-svg"
         },
-        {
-            "title": "Code School",
-            "hex": "4CADC0",
-            "source": "https://www.codeschool.com/brand-assets"
-        },
         {
             "title": "Codewars",
             "hex": "AD2C27",

icons/codeschool.svg

@@ -1 +0,0 @@
-<svg aria-labelledby="simpleicons-codeschool-icon" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="simpleicons-codeschool-icon">Code School icon</title><path d="M12.003 21.832c-5.438 0-9.847-4.41-9.847-9.844 0-5.438 4.41-9.844 9.847-9.844 5.435 0 9.842 4.406 9.842 9.844 0 5.436-4.394 9.844-9.842 9.844zm0-21.832C5.375 0 0 5.376 0 12s5.377 12 12.003 12C18.625 24 24 18.624 24 12S18.637-.012 12.003 0zm-1.3 15.294L7.2 12l3.503-3.307V5.61L3.943 12l6.76 6.38v-3.086zm2.61-9.685v3.07L16.81 12l-3.502 3.294v3.086L20.07 12l-6.763-6.39"/></svg>