Remove psr/log dependency to composer.json

Author: devanych

composer.json

@@ -23,8 +23,7 @@
         "httpsoft/http-response": "^1.0",
         "psr/http-message": "^1.0",
         "psr/http-server-handler": "^1.0",
-        "psr/http-server-middleware": "^1.0",
-        "psr/log": "^1.0"
+        "psr/http-server-middleware": "^1.0"
     },
     "require-dev": {
         "httpsoft/http-request": "^1.0",