android: Move ModuleInterface rules out of cronet

Since Cronet does not use modules, it should not need these rules. These
rules belong in //components/module_installer/android. They have been
moved to //components/module_installer/android/module_installer.flags.

Also wrap comments to 80 characters.

Bug: 338060678
Change-Id: I1ab46e752d8e04a25c484d0cf4692e81cb0893a5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5503449
Reviewed-by: Etienne Dechamps <edechamps@google.com>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: Peter Wen <wnwen@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1294986}