[py] Remove ability to set env var for SE_SAFARIDRIVER

[cgoldberg]

User description

🔗 Related Issues

#15849

💥 What does this PR do?

This PR removes the ability to set SE_SAFARIDRIVER environment variable to control the location of safaridriver, since it is not possible to change its location. This brings the Python bindings into alignment with others (i.e. Java bindings) that do not respect this environment variable.

Note: you can still pass a key name in the constructor to specify driver location, but I didn't want to change the public API. However, setting a key name is not useful because you can't have safaridriver in an alternate location.

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PR Type

Enhancement

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Description

• Remove support for SE_SAFARIDRIVER environment variable

• Align Python Safari driver behavior with other bindings

• Simplify Service class initialization logic

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Changes walkthrough 📝

	Relevant files
Enhancement	service.py Remove SE_SAFARIDRIVER env var support from Safari Service py/selenium/webdriver/safari/service.py Removed default use of SE_SAFARIDRIVER env var for driver path Cleaned up constructor logic for driver path environment key +0/-1

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[cgoldberg]

Closing this... The proper fix is to remove support for setting safaridriver location via environment variable completely since the driver can only exist in its default location. That will be a change to the API.