Remove access modifier final from private methods (PHP 8 support)

[junaidbinfarooq]

Removes access modifier final from private methods as such methods are never overridden by other classes.

[coveralls]

Pull Request Test Coverage Report for Build 783

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 38.156%

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Totals
Change from base Build 782:	0.0%
Covered Lines:	509
Relevant Lines:	1334

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💛 - Coveralls

[spaze]

Just a heads up that this solves a new PHP 8.0 warning:

Warning: Private methods cannot be final as they are never overridden by other classes

See https://3v4l.org/rl4ti

[junaidbinfarooq]

Just a heads up that this solves a new PHP 8.0 warning:

Warning: Private methods cannot be final as they are never overridden by other classes

See https://3v4l.org/rl4ti

Well, that is what I exactly tried to fix. :)

[spaze]

Well, that is what I exactly tried to fix. :)

Just adding a context so the maintainer can prioritize properly.

[spaze]

Hey @paragonie-security, can you please merge this and prepare a new release to support PHP 8.0? Thank you! :-)

[junaidbinfarooq]

Anyone merging this PR? @paragonie-security?

[spaze]

@paragonie-scott @paragonie-staff Any chance of merging this soon for flawless PHP 8 support? Thanks!