fix: removed preview

Author: aomegax

Diff for: docker/applicationinsights.json

@@ -3,28 +3,6 @@
     "destination": "console",
     "level": "INFO"
   },
-  "preview": {
-    "instrumentation": {
-      "micrometer": {
-        "enabled": false
-      },
-      "jvm": {
-        "enabled": false,
-        "gc": false,
-        "threads": false,
-        "memory": false
-      },
-      "logging": {
-        "enabled": false
-      },
-      "exceptions": {
-        "enabled": false
-      },
-      "jmxMetrics": {
-        "enabled": false
-      }
-    }
-  },
   "instrumentation": {
     "azureSdk": {
       "enabled": false