Fix script to unsync CI from Asset (#2430)

* Create script.js

* Create readme.md

Author: bharakm

Specialized Areas/CMDB/UnsyncCI from Asset/readme.md

@@ -0,0 +1 @@
+Fix script to unsync a Asset from a CI . OOB the field is read only, this allows admin to unsync when required.

Specialized Areas/CMDB/UnsyncCI from Asset/script.js

@@ -0,0 +1,22 @@
+unsyncCI();
+
+function unsyncCI() {
+
+    var grAsset = new GlideRecord("alm_hardware");
+    grAsset.addEncodedQuery('sys_id='); //replace query with rrequired list
+    grAsset.query();
+    if (grAsset.next()) {
+        var grCI = new GlideRecord("cmdb_ci");
+        grCI.addQuery("sys_id", grAsset.ci);
+        grCI.setLimit(1);
+        grCI.query();
+        if (grCI.next()) {
+            grCI.asset = '';
+            grCI.setWorkFlow(false);
+            grCI.update();
+        }
+        grAsset.ci = '';
+        grAsset.setWorkFlow(false);
+        grAsset.update();
+    }
+}