Remove the platform adaptation for openpass.

[qiuguohua]

Re: #

Changelog

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Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

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Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.

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Code Size Check Report

Wechat (WASM)	Before	After	Diff
2D Empty (legacy pipeline)	1009914 bytes	1009914 bytes	✅ 0 bytes
2D All (legacy pipeline)	2676381 bytes	2676381 bytes	✅ 0 bytes
2D All (new pipeline)	2768117 bytes	2768117 bytes	✅ 0 bytes
(2D + 3D) All	10025305 bytes	10025305 bytes	✅ 0 bytes

Web (WASM + ASMJS)	Before	After	Diff
(2D + 3D) All	16845449 bytes	16845449 bytes	✅ 0 bytes

Interface Check Report

This pull request does not change any public interfaces !