Remove api.IDBVersionChangeEvent.version from BCD (#13814)

This PR removes the irrelevant `version` member of the `IDBVersionChangeEvent` API as per the corresponding [data guidelines](https://github.com/mdn/browser-compat-data/blob/main/docs/data-guidelines.md#removal-of-irrelevant-features). The lack of current support has been confirmed by the [mdn-bcd-collector](https://mdn-bcd-collector.appspot.com) project (v4.0.0), even if the current BCD suggests support.  (Verification performed in #13741.)

api/IDBVersionChangeEvent.json

@@ -242,54 +242,6 @@
           }
         }
       },
-      "version": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IDBVersionChangeEvent/version",
-          "support": {
-            "chrome": {
-              "version_added": "12"
-            },
-            "chrome_android": {
-              "version_added": "18"
-            },
-            "edge": {
-              "version_added": "≤18"
-            },
-            "firefox": {
-              "version_added": "10"
-            },
-            "firefox_android": {
-              "version_added": "22"
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": "22"
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": "1.0"
-            },
-            "webview_android": {
-              "version_added": "≤37"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
       "worker_support": {
         "__compat": {
           "description": "Available in workers",