Print a warning and continue if we find a remote

- We don't handle non-default remotes right now, but don't bail out.
Just print a warning message.

Change-Id: I7750d7ef9ad0f6db9ecf2ec76d07a4c9817c3227
diff --git a/create_release_manifest.py b/create_release_manifest.py
index 567a029..2a1a961 100755
--- a/create_release_manifest.py
+++ b/create_release_manifest.py
@@ -13,9 +13,8 @@
   tree = ET.parse(args.input)
   root = tree.getroot()
   for project in root.findall('project'):
-    # This repo gives 'fatal: no matching remote head' if you specify a rev.
-    # May be able to remove this when/if we fork the project.
-    if 'aarch64-linux-android' in project.get('path'):
+    if project.get('remote'):
+      print('We don\'t currently handle projects with non-default remotes: ', project.get('name'))
       continue
     path = project.get('path')
     git_output = subprocess.check_output(['git', '-C', path, 'rev-parse', 'HEAD'])
@@ -25,4 +24,4 @@
   tree.write(args.output)
 
 if __name__ == '__main__':
-  main()
\ No newline at end of file
+  main()