Remove unused ui/views/metadata/view_factory_internal.h includes

This header exposes 2 kinds of symbols:
- views::internal:: ones -> None of the including files have instances
  of '::internal'.
- The base template views::Builder<> [1] -> The files don't depend on
  this but rather on the template specializations defined by the
  DEFINE_VIEW_BUILDER macro [2].

[1] https://source.chromium.org/chromium/chromium/src/+/main:ui/views/metadata/view_factory_internal.h;l=27;drc=f68e8912da26d1c5ba275083f6f87230a01488ad
[2] https://source.chromium.org/chromium/chromium/src/+/main:ui/views/controls/label.h;l=601;drc=03e297a2098b0a683e6fb4c25620c5d22256032a

Bug: None
Change-Id: I9bf8ba959a880ccb99450ef12467496e9fb822f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7002836
Auto-Submit: Victor Vianna <victorvianna@google.com>
Commit-Queue: James Cook <jamescook@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: Victor Vianna <victorvianna@google.com>
Cr-Commit-Position: refs/heads/main@{#1524986}