Remove autofill from .gitignore

chrome/browser/autofill/internal is no longer used.

Bug: None
Change-Id: I2dd0ec3860ee44062813d4fd9968abad37ba7d08
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1629129
Auto-Submit: Michael Giuffrida <michaelpg@chromium.org>
Reviewed-by: Fabio Tirelo <ftirelo@chromium.org>
Commit-Queue: Michael Giuffrida <michaelpg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663870}

.gitignore

@@ -87,7 +87,6 @@ vs-chromium-project.txt
 /chrome/app/theme/default_100_percent/google_chrome
 /chrome/app/theme/default_200_percent/google_chrome
 /chrome/app/theme/google_chrome
-/chrome/browser/autofill/internal
 /chrome/browser/chromeos/arc/voice_interaction/internal
 /chrome/browser/chromeos/assistant/internal
 /chrome/browser/chromeos/login/screenshot_testing/golden_screenshots/*.png