remove ReactFragmentActivity

[dulmandakh]

Summary

Remove ReactFragmentActivity class, which was deprecated at least since 0.58.

Changelog

[Android] [Changed] - remove ReactFragmentActivity class.

Test Plan

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: 017bc91

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,507,811	+0
android	hermes	armeabi-v7a	7,099,323	+0
android	hermes	x86	7,945,738	+0
android	hermes	x86_64	7,856,777	+0
android	jsc	arm64-v8a	8,972,427	+0
android	jsc	armeabi-v7a	8,547,052	+0
android	jsc	x86	8,971,859	+0
android	jsc	x86_64	9,523,158	+0

Base commit: 017bc91

[facebook-github-bot]

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

[fkgozali]

Actually, I just checked, we're still using this internally for other reasons. We could move it to just internal technically, but let's revisit a bit later?

[fkgozali]

Actually, I just checked, we're still using this internally for other reasons. We could move it to just internal technically, but let's revisit a bit later?

Nevermind, the removed file was just an empty abstract subclass of ReactActivity, so I updated our internal callsites.

[react-native-bot]

This pull request was successfully merged by @dulmandakh in 2798e71.

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