Simplify the Android.mk file in the App Template

[cortinico]

Summary

I'm simplifying the Android.mk file inside the template as it was confusing. There are two ways to include the generated code from the codegen:

1. Importing the generated Android.mk file
2. Include the generate source files in the _appmodules source files.

Those two approaches are mutually exclusive (as doing both will lead to duplicate symbols). Our template comments were confusing and were suggesting a combination of both.

I'm simplifying the comments here by removing the one suggesting to go with option 1 instead.

Changelog

[Android][Changed] - Simplify the Android.mk file in the App Template

Test Plan

Nothing to test here as it's a comments only change

[facebook-github-bot]

@cortinico has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by @cortinico in 7fb0bb4.

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