Angular upgrade

	- Upgraded Angular from 14 to 15 version.

Change-Id: I2339a04020153cbc9ed7a14bfe8e0aa265e507da
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>
diff --git a/src/app/vim-accounts/info-vim/InfoVimComponent.ts b/src/app/vim-accounts/info-vim/InfoVimComponent.ts
index 02aea69..42a3209 100644
--- a/src/app/vim-accounts/info-vim/InfoVimComponent.ts
+++ b/src/app/vim-accounts/info-vim/InfoVimComponent.ts
@@ -18,7 +18,6 @@
 /**
  * @file Info VIM Page
  */
-import { isNullOrUndefined } from 'util';
 import { Component, Injector, OnInit } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
@@ -29,6 +28,7 @@
 import { environment } from 'environment';
 import * as HttpStatus from 'http-status-codes';
 import { RestService } from 'RestService';
+import { isNullOrUndefined } from 'SharedService';
 import { CONFIG, VimAccountDetails, VIMData } from 'VimAccountModel';
 
 /**