Remove PropTypes from ViewerPagerAndroid.android.js

[nissy-dev]

related #21342

This is a first PR for this repo.
So, if there are any problem, please tell me 🙇

TODO

• delete props types
• apply read only interface

CheckList

• yarn prettier
• yarn flow-check-android

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[pull-bot]

	Warnings
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[empyrical]

This looks great, especially with the doc comments moved over! 👍

One tweak that should be made is that the values of the type should be made nullable;

Like, from this:

initialPage?: number

To this:

initialPage?: ?number

With keyboardDismissMode, you will need put it in parenthesis like this:

  keyboardDismissMode?: ?('none' | 'on-drag'),

[nissy-dev]

Thank you for comments! I fix some codes.

[empyrical]

LGTM! 👍

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[react-native-bot]

@nd-02110114 merged commit 00b1f93 into facebook:master.

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