Remove static `materialize` function
Remove static `materialize` function

Now that we have the initializer that takes a function, this seems less
interesting. Returning a function is much less useful than just passing
a function and getting a Result.

antitypical/Result,ishkawa/Result,ratkins/Result,natestedman/Result,NachoSoto/Result,ishkawa/Result,natestedman/Result,antitypical/Result,bencochran/Result,bencochran/Result,ishkawa/Result,antitypical/Result,NachoSoto/Result,ikesyo/Result,ratkins/Result,ratkins/Result,ikesyo/Result,NachoSoto/Result,natestedman/Result,ikesyo/Result,bencochran/Result