[MonologBridge] Uninstallable together with symfony/http-kernel in 3.0.6

Caused by symfony#18705, it is impossible to install v3.0.6 of symfony/monolog-bridge
together with v3.0.6 of symfony/http-kernel.

The intention of symfony#18705 "added a conflict between Monolog bridge 2.8 and
HTTP Kernel 3.0+" was to prevent installing symfony/monolog-bridge from the
3.0 series with http-kernel from the 2.8 series of symfony. While this now
works correctly in v2.8.6, it breaks installing symfony/monolog-bridge v3.0.6
with symfony/http-kernel v3.0.6.

This commit resolves this issue.

Author: ymc-dabe

src/Symfony/Bridge/Monolog/composer.json

@@ -24,9 +24,6 @@
         "symfony/console": "~2.8|~3.0",
         "symfony/event-dispatcher": "~2.8|~3.0"
     },
-    "conflict": {
-        "symfony/http-kernel": ">=3.0"
-    },
     "suggest": {
         "symfony/http-kernel": "For using the debugging handlers together with the response life cycle of the HTTP kernel.",
         "symfony/console": "For the possibility to show log messages in console commands depending on verbosity settings. You need version ~2.3 of the console for it.",