Remove unused library

Author: harikt

composer.json

@@ -27,8 +27,7 @@
     },
     "suggest": {
         "ext-openssl": "OpenSSL generates the best secure CSRF tokens.",
-        "ext-mcrypt": "Mcrypt generates the next best secure CSRF tokens.",
-        "ircmaxell/random-lib": "A Library For Generating Secure Random Numbers"
+        "ext-mcrypt": "Mcrypt generates the next best secure CSRF tokens."
     },
     "require-dev": {
         "phpunit/phpunit": "^8.5"