clang-format: [JS] new and delete are valid function names.

Before:
  someObject.new ();
  someObject.delete ();

After:
  someObject.new();
  someObject.delete();

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222890 91177308-0d34-0410-b5e6-96231b3b80d8