Remove Readability icon (#808)

_data/simple-icons.json

@@ -1400,11 +1400,6 @@
             "hex": "61DAFB",
             "source": "https://facebook.github.io/react/"
         },
-        {
-            "title": "Readability",
-            "hex": "990000",
-            "source": "https://readability.com/about"
-        },
         {
             "title": "Read the Docs",
             "hex": "8CA1AF",

icons/readability.svg

@@ -1 +0,0 @@
-<svg aria-labelledby="simpleicons-readability-icon" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title id="simpleicons-readability-icon">Readability icon</title><path d="M18.126 12.123v.002l-.329 2.963c-1.392-1.137-3.658-1.985-5.809-1.985-2.14 0-4.396.854-5.787 1.979l-.327-2.955c-.003-.899-.442-1.695-1.11-2.205.385-3.645 3.465-6.494 7.225-6.494 3.765 0 6.85 2.865 7.228 6.525-.656.51-1.087 1.304-1.09 2.203"/><path d="M17.395 18.471H6.604l-.367-2.887c1.33-1.285 3.408-2.042 5.751-2.042 2.354 0 4.443.762 5.771 2.063l-.365 2.864v.002zM5.524 20.572c-1.134 0-1.073-.021-1.073-1.156l-1.748-4.07C1.203 15.294 0 14.061 0 12.549c0-1.55 1.256-2.805 2.805-2.805 1.545 0 2.798 1.252 2.801 2.797v.004l.747 6.721c0 1.125.306 1.303-.828 1.303m15.772-5.235L19.549 19.4c0 1.125.06 1.168-1.073 1.168-1.134 0-.828-.193-.828-1.318l.746-6.721c.004-1.545 1.259-2.805 2.804-2.805 1.546 0 2.803 1.26 2.803 2.805 0 1.516-1.199 2.744-2.703 2.789"/></svg>