refactor: removed version from composer.json

composer.json

 {
-  "name": "quiqqer\/eventcalendar",
-  "type": "quiqqer-module",
-  "description": "Expands the quiqqer/calendar package with event pages and lists.",
-  "version": "dev-dev",
-  "licence":["CC BY-NC-SA 4.0", "PCSG QL-1.0"],
-  "authors": [
-    {
-      "name": "Jan Wennrich",
-      "email": "jan.wennrich@pcsg.de",
-      "homepage": "https:\/\/www.pcsg.de",
-      "role": "Developer"
+    "name": "quiqqer\/eventcalendar",
+    "type": "quiqqer-module",
+    "description": "Expands the quiqqer\/calendar package with event pages and lists.",
+    "licence": [
+        "CC BY-NC-SA 4.0",
+        "PCSG QL-1.0"
+    ],
+    "authors": [
+        {
+            "name": "Jan Wennrich",
+            "email": "jan.wennrich@pcsg.de",
+            "homepage": "https:\/\/www.pcsg.de",
+            "role": "Developer"
+        }
+    ],
+    "support": {
+        "mail": "support@pcsg.de"
+    },
+    "require": {
+        "quiqqer\/calendar": "*"
+    },
+    "autoload": {
+        "psr-4": {
+            "QUI\\EventCalendar\\": "src\/QUI\/EventCalendar"
+        }
     }
-  ],
-  "support": {
-    "mail": "support@pcsg.de"
-  },
-  "require": {
-    "quiqqer\/calendar": "*"
-  },
-  "autoload": {
-    "psr-4": {
-      "QUI\\EventCalendar\\": "src\/QUI\/EventCalendar"
-    }
-  }
 }
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