Update composer.json

Author: javadev

Diff for: wp-includes/sodium_compat/composer.json

@@ -53,9 +53,6 @@
     "php": "^5.2.4|^5.3|^5.4|^5.5|^5.6|^7|^8",
     "paragonie/random_compat": ">=1"
   },
-  "require-dev": {
-    "phpunit/phpunit": "^3|^4|^5|^6|^7|^8|^9"
-  },
   "suggest": {
     "ext-libsodium": "PHP < 7.0: Better performance, password hashing (Argon2i), secure memory management (memzero), and better security.",
     "ext-sodium": "PHP >= 7.0: Better performance, password hashing (Argon2i), secure memory management (memzero), and better security."