Remove the provide rule entirely

This package does not provide a standalone implementation of psr/http-factory but only decorators

Author: stof

composer.json

@@ -45,9 +45,6 @@
     "phpunit/phpunit": "^8.5",
     "squizlabs/php_codesniffer": "^3.5"
   },
-  "provide": {
-    "psr/http-factory-implementation": "1.0"
-  },
   "autoload": {
     "psr-4": {
       "Slim\\Http\\": "src/"