fix: use asyncio.run instead of loop variable (Azure#26118)

Author: wonhyeongseo

sdk/containerregistry/azure-containerregistry/samples/async_samples/sample_delete_images_async.py

@@ -57,5 +57,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())

sdk/containerregistry/azure-containerregistry/samples/async_samples/sample_delete_tags_async.py

@@ -58,5 +58,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())

sdk/containerregistry/azure-containerregistry/samples/async_samples/sample_hello_world_async.py

@@ -58,5 +58,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())

sdk/containerregistry/azure-containerregistry/samples/async_samples/sample_list_tags_async.py

@@ -55,5 +55,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())

sdk/containerregistry/azure-containerregistry/samples/async_samples/sample_set_image_properties_async.py

@@ -61,5 +61,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())