Remove composer template because the new plugin system isn't ready yet

composer.json-dist

@@ -1,35 +0,0 @@
-{
-    "name": "roundcube/roundcubemail",
-    "description": "The Roundcube Webmail suite",
-    "license": "GPL-3.0",
-    "repositories": [
-        {
-            "type": "composer",
-            "url": "http://plugins.roundcube.net/"
-        },
-        {
-            "type": "pear",
-            "url": "http://pear.php.net/"
-        },
-        {
-            "type": "package",
-            "package": {
-                "name": "Net_SMTP",
-                "version": "dev-master",
-                "source": {
-                    "url": "http://github.com/pear/Net_SMTP",
-                    "type": "git",
-                    "reference": "master"
-                }
-            }
-        }
-    ],
-    "require" : {
-        "pear-pear/Mail_Mime": ">=1.8.1",
-        "pear-pear/Mail_mimeDecode": ">=1.5.5",
-        "Net_SMTP": "dev-master",
-        "pear-pear/Net_IDNA2": ">=0.1.1",
-        "pear-pear/Auth_SASL": ">=1.0.6"
-    },
-    "minimum-stability": "dev"
-}